KR19990059019A - Third party calling device and method during a call in mobile communication system - Google Patents

Abstract

The present invention relates to a call control method of a mobile communication system that performs communication using a CDMA method or a TDMA method, and more particularly, comprising a terminal, a base station, a control station, an exchange station, and a home location register. A call connection controller of a mobile communication system which performs a call connection control function through a call control unit of a control station, a control station matching unit of a switching station, a mobile call processing unit, a visitor location register, and the like, wherein the mobile call processing unit is a caller terminal. A sub-call call control unit 61 for continuously detecting a paging request signal transmitted through the paging request signal and outputting a paging request signal or a three-way call function request signal when there is a paging request signal; The mobile call library outputs a paging request signal when the paging request signal is transmitted from the sub-call control unit 61, and outputs a signal requesting the execution of the three-party call function when the three-party call function request signal is transmitted. 62); A mobile paging control unit 63 for receiving a paging request signal transmitted from the mobile call library 62 and outputting a signal for requesting confirmation of a state of a mobile communication terminal to be connected or a signal for performing a three-way call function. Wow; When the mobile paging control unit 63 receives a signal requesting confirmation of the state of the mobile communication terminal to be connected, the mobile paging device detects the state of the mobile communication terminal to be connected and displays a signal indicating that the mobile paging terminal is in a call state. A main mobile call controller 64 for instructing the execution of the three-party call function when the signal is transmitted to the control unit and the mobile call library 62 requests the execution of the three-party call function; A mobile call controller (65) which is generated by the control of the main mobile call controller (64) and outputs a signal for requesting the execution of the three-party call function; A call waiting service control unit 66 which receives the signal transmitted from the mobile call control unit 65 and controls the performance of the three-party call function; The third party call device during a call of the mobile communication system, characterized by comprising a self-call waiting service control unit 67 generated by the call waiting service control unit 66 to perform a three-party call function. And method.

This invention has the effect that it is possible to alternate the call between the original caller and the third party by using the telephone call key of the called party terminal.

Description

Third party calling device and method during a call in mobile communication system

The present invention provides a call control method of a mobile communication system (MOBILE TELECOMMUNICATION SYSTEM) that performs communication using a CDMA (CODE DIVISION MULTIPLE ACCESS) method or a TDMA (TIME DIVISION MULTIPLE ACCESS) method. In particular, when a call request is received by a new subscriber during a call, and a call waiting sound indicating a call request for a new caller is transmitted, the subscriber who receives the call waiting sound uses a specific key. It is intended to allow you to talk to two subscribers in turn.

As is well known, a mobile communication system is a communication system for a mobile device such as a person, a car, a ship, a train, an aircraft, and includes a mobile phone (mobile phone, a vehicle phone), a port phone, an aircraft phone, a mobile public phone ( Trains, cruise ships, express buses), radio calling, radiotelephony, satellite mobile communication, amateur radio, and fishing service ships.

Such mobile communication includes an AMPS (ADVANCED MOBILE PHONE SERVICE) system using an analog method, a CDMA system using a DIGITAL method, a TDMA system, and a FDMA (FREQUENCY DIVISION MULTIPLE ACCESS: frequency division multiple access) system.

As shown in FIG. 1, the CDMA system selectively or simultaneously supports the services of the AMPS system and the services of the CDMA system, thereby being a terminal device that enables a subscriber to communicate through a mobile communication network. 10; A base station (BASE TRANSCEIVER SUBSYSTEM) 20 for communicating with the terminal 10 using a protocol defined in IS-95 in a wireless section; A base station controller 30 for controlling the radio link and the wired link and performing a handoff function for maintaining the continuity of the call even when the subscriber is moving; A switching station (MOBILE SWITCHING CENTER) 40 which configures a subscriber's call path and performs a connection with another communication network; Subscriber information is entered, consisting of a home location register (HOME LOCATION REGISTER) (50), etc. to exchange signals with the switching center (4), the terminal through the base station 20, the control station 30 and the switching station 40 A device for realizing the call of (10).

Here, the home location register 50 is a system for storing subscriber information.

In addition, the switching center 40, which connects subscribers, is composed of a CS (CONTROL SUB-SYSTEM), an IS (INTERCONNECTION SUBSYSTEM), and an SS (SWITCHING SUBSYSTEM).

Here, the CS is a subsystem (SUBSYSTEM) for performing the operation and maintenance of the switching center and the access, registration, cancellation, and change processing of the mobile subscriber, and the system-wide maintenance, test and measurement, statistics, and disk control management. It performs various input / output statement control functions with the operator. In addition, CS performs an alarm panel, a video display terminal, a magnetic tape device, an optical disk device, and a disk device in order to perform the above functions. It has matching function with input / output device and operation maintenance center.

In such a mobile communication system, when a subscriber attempts to access a call through a calling party terminal, the mobile communication network (eg, CDMA network, PSND (PUBLIC SWITCHED DATA) is transmitted through the base station 20, the control station 30, and the switching station 40. NETWORK, etc.) to connect with the called party.

This will be described in detail as follows.

In the present description, the caller and the called party both subscribe to the mobile communication service and then call only through the mobile communication terminal (operation when the caller is not a mobile communication service guide).

First, when a caller attempts to access a call through a caller terminal, that is, presses a telephone number and then sends a call connection request signal (SETUP SIGNAL) by pressing a SEND KEY, the base station 20 detects and controls it. The station 30 transmits.

Then, the call connection request signal sent from the called party terminal is transmitted to the control station matching section 41 of the switching center 40 through the call control section 31 of the control station 30, as shown in FIG. The control station matching section 41 that has received the call connection request signal notifies the mobile call processing section 42 that the call connection request signal has been received.

In addition, the mobile call processor 42, which has received the call connection request signal, uses the visitor's location register (in order to know the calling party and the called party's information from the calling party's subscriber number and the calling party's subscriber number). 43, the caller subscription information is requested to the home location register 50.

Then, the home location register 50 retrieves the information of the caller and the calling party and transmits the information to the mobile call processor 42 through the visitor location register 43.

At this time, if both the calling party and the called party are normal subscribers, the call control unit 31 of the control station 30 is requested to the PGING to the area where the location of the called terminal is registered. The call controller 31 receiving the paging request instructs the base station 20 in the area where the called terminal is located.

On the other hand, when the called party terminal receiving the paging responds, the mobile call processor 42 transmits the response signal of the called party terminal through the base station 20, the control station 30, and the control station matching unit 41 of the switching station 40. Will be sent to.

Then, the mobile call processor 42 receiving the response signal from the called party terminal sends a signal to the call controller 31 through the control station matching unit 41 so that the called party terminal 10 outputs a ring signal. You will be asked to send it.

The call control unit 31 receiving the request to output the ring signal sends a signal to output the ring signal to the called party terminal through the base station 20, and the called party terminal receives the ring signal.

At this time, when the subscriber answers, the subscriber response signal is transmitted to the mobile call processor 42 through the base station 20, the call control unit 31, and the control station matching unit 41, and the voice channel is connected. Make a call between the called party.

However, the conventional mobile communication system operating as described above has a problem in that when a subscriber makes a call, a call from a third party cannot receive it.

Therefore, the third party has a problem of waiting until the end of the telephone of the telecommunication subscriber to be called or using another communication service (for example, a wireless calling system).

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems. In particular, when there is a new call connection request from a third party during a call using a mobile communication service, a specific key of a mobile subscriber station in the call is used. It is to provide a "third party call method during a call in a mobile communication system" which enables to make a call with a third party.

In order to achieve the above object, the present invention " third party call device of a mobile communication system " comprises a terminal, a base station, a control station, an exchange station, and a home location register. In the call connection control device of the mobile communication system performing call connection control function through the control station matching unit of the switching center, the mobile call processing unit, the visitor location register, and the like,

The mobile call processor continuously detects a paging request signal transmitted through a caller terminal and, when there is a paging request signal, outputs a paging request signal or a three-way call function request signal (SUB-). MOBILE CALL CONT- ROLLER: hereinafter referred to as MCC _S ); A mobile call library that outputs a paging request signal when the paging request signal is transmitted from the MCC _S , and outputs a signal requesting the execution of the three-party calling function when the three-party call function request signal is transmitted. (Hereinafter referred to as MSL); A mobile paging control unit for receiving a paging request signal transmitted from the MSL and outputting a signal requesting confirmation of a state of a mobile communication terminal to be connected or a signal requesting to perform a three-way call function (MOBILE PAGING CONT- ROLLER: Hereinafter referred to as MPC); In the MPC, when a signal for requesting confirmation of the state of the mobile communication terminal to be connected is received, the mobile station detects the state of the mobile communication terminal to be connected and transmits a signal to the MPC indicating that the call is in the call state. In the case, when a signal for requesting the execution of the three-party call function is transmitted, a main mobile call controller (MAIN-MOBILE CALL CONTROLLER: hereinafter referred to as MCC _M ) instructing the execution of the three-party call function; A mobile call controller (CHILD-MOBILE CALL CONTROLLER: hereinafter referred to as MCC _C ) that is generated by the control of the MCC _M and outputs a signal for requesting to perform a three-party call function; A call waiting service control unit (MOBILE CALL WATING CONTROLLER: hereinafter referred to as MCAW) for receiving a signal transmitted from the MCC _C and controlling a performance of a three-party call function; Technical features of the present invention include a self-waiting service controller (CHILD-MOBILE CALL WATING CONTROLLER: hereinafter referred to as MCAW _C ) that is generated by the control of the MCAW and performs a three-party call function.

On the other hand, the present invention "third party call method of the mobile communication system", the three-party call request to continuously detect whether or not a new call connection request signal from the third terminal to the mobile communication service subscriber in the call; A detection step; If it is determined that a new call connection request signal is generated from a third terminal as a result of performing the three-party call request detection step, the third party call function service is performed to enable a third party call during the call. A transition determination step of waiting for a predetermined time whether or not a call forwarding key to be used when a caller is to be switched from a called party terminal is selected; If it is determined that the call conversion key of the called terminal is selected within a predetermined time as a result of performing the switching decision step, the third party which connects the called terminal and the third party terminal to make a call between the called party and the third party A call step; If the call between the called party and the third party is terminated during the third-party call step, a third party calling the called party and the original caller after transmitting a disconnection tone indicating the call disconnection of the third party to the called party's terminal; Ending the call; If it is determined that the call transfer key is selected through the called terminal during the third-party call step, the call returning step of connecting the called terminal and the original caller's terminal to realize the call of the called party and the original caller is included. It is characterized by the methodological configuration.

In addition, in the third party call request detection step, when it is determined that a new call connection request signal is generated from a third terminal, the mobile communication subscriber requesting an incoming call detects whether the third party call function is subscribed to the service. If not, it is characterized in that the end of the process after performing the call processing.

In addition, if it is determined that the call forwarding key has not been selected for a predetermined time as a result of performing the conversion decision step, after determining that the called party has no intention of changing the caller, the processing of the called party is performed. And returning to the third party call request detection step by performing a call connection of a third party terminal.

In addition, after the call terminal is connected to the third party terminal in the third party call step, whether the original caller disconnects the call is continuously detected, and when the original caller releases the call connection, the caller of the original caller is connected. And a predetermined call cancel sound indicating release. At this time, after transmitting the call release tone indicating the call disconnection of the original caller to the called party's terminal, it is detected whether the call with the third party is terminated and the call with the third party is terminated. When the call with the third party is not terminated after the connection is released, the third call terminal continuously detects whether or not a new call connection request signal is generated and generates a new call connection request signal. If it is determined that, it is characterized in that the return to the three-party call request detection step.

In addition, after the call connection between the called terminal and the third party terminal in the third party call step, it is characterized in that it is continuously detected whether or not the call transfer key is selected through the called terminal.

In addition, after the call terminal and the third party terminal is connected to the call in the third party call step, a predetermined call holding sound is transmitted to the terminal of the original caller.

In addition, after performing the third party call termination step and connecting the called party with the original caller, whether or not a new call connection request signal is generated through the third terminal is continuously detected, and a new call connection request signal is generated. If it is determined that it is, it is characterized in that the return to the three-party call request detection step.

In addition, when the caller terminal and the original caller's terminal are connected by performing the call return step, the third party terminal continuously detects whether or not the call connection is released, and when the third party releases the call connection, It is characterized in that the predetermined call release sound indicating the call disconnection of the child terminal is sent to the called party terminal.

In addition, when the caller terminal is connected to the caller terminal and the original caller terminal by performing the call recovery step, the caller terminal is continuously detected whether the call forwarding key is selected through the called party terminal, and it is determined that the call forwarding key is selected. It characterized in that the return to the three-party call request detection step.

In addition, when the caller terminal and the original caller terminal is connected by performing the call return step, a predetermined call holding sound is transmitted to the third party terminal.

The present invention "third party call device and method during a call of the mobile communication system", when a call connection request signal is generated through the third terminal during the call of the mobile subscriber, the MCC, MSL, and MCAW By performing the three-party call function by processing, the call between the original caller and the third party can be alternated using the call phone key of the called party's terminal.

1 is a block diagram schematically showing a configuration of a mobile communication system;

2 is a block diagram schematically illustrating a call processing system of a mobile communication system;

3 is a block diagram showing the configuration of a "third party call device during a call in a mobile communication system";

4 is a control flow diagram illustrating a "third party call method during a call in a mobile communication system";

5 is a view showing an example of a standby sound and a pending sound according to the present invention;

6 is a signal flow diagram illustrating a process of performing a three-party call function according to the "third-party call method of a call in the mobile communication system".

<Description of the symbols for the main parts of the drawings>

61: MCC _S 62: MSL

63: MPC 64: MCC _M

65: MCC _C 66: MCAW

67: MCAW _C 100: 3-party call request detection step

200: conversion status detection step 300: three-party call step

400: end of 3rd party call 500: call return step

Hereinafter, with reference to the accompanying drawings, the configuration, operation and operation effects for an embodiment according to the technical concept of the present invention "third party call device and method of a mobile communication system configured as described above" as follows. same.

<Example>

First, as shown in Fig. 3, MCC _S 61, MSL 62, MPC 63, MCC _M 64, MCC _C 65, MCAW 66, W This embodiment is configured by connecting _C 67.

In addition, in the present embodiment, a send key installed in the mobile communication terminal is used as a call switching key for generating a control signal for alternately conducting a call between the original caller and the third caller.

Then, when the mobile subscriber performs the call, the mobile communication system performs the three-party call request detection step 100, as shown in FIG. The call connection request signal is continuously detected.

At this time, when it is determined that a new call connection request signal is generated from the third terminal, it is detected whether or not the mobile communication subscriber requesting the call is subscribed to the three-party call function service. Terminates after performing heavy processing.

That is, it detects whether the subscriber who wants to connect to the call is subscribed to the 3rd party call service, and if not, transmits a tone indicating that the call is in progress to the third party's terminal, and then connects to the third party's call. Will be released.

On the other hand, when it is determined that a new call connection request signal is generated from the third terminal as a result of performing the three-party call request detection step 100, a three-party call function that enables a third party to talk during the call. By performing the service, the conversion determination step 200 waits for a predetermined time whether or not the call switching key (send key) used when the caller is to be switched from the called party terminal is performed.

In this case, when it is determined that the send key has not been selected for a predetermined time, the caller determines that the caller does not intend to change the caller, processes the called party's terminal during a call, and then releases the call connection of the third party terminal. .

In addition, after releasing the call connection of the third party terminal, it is detected whether a new call connection request signal is generated, and when a new call connection request signal is generated, the process returns to the third party call request detection step 100. Done.

In addition, if it is determined that the send key is selected in the called party terminal within a predetermined time as a result of performing the conversion determination step 200, the called party and the third party terminal are connected to make a call between the called party and the third party. The three-party call step 300 is realized.

At this time, after the caller terminal and the third party terminal are connected to the call, whether or not the original caller disconnects the call is continuously detected, and when the original caller releases the call connection, a predetermined call indicating the caller's call disconnection. After transmitting the release sound to the called party terminal, it is continuously detected whether the send key is selected through the called party terminal.

Here, after transmitting the call release tone indicating the call disconnection of the original caller to the called party's terminal, if it is determined whether the call with the third party is terminated and it is determined that the call with the third party is terminated, If the call connection is terminated after termination of the call connection, and the call with the third party is not terminated, the third terminal terminal continuously detects whether or not a new call connection request signal is generated and generates a new call connection request signal. If it is determined that it is, the process returns to the three-party call request detection step (100).

On the other hand, when the call between the called party and the third party is terminated during the third party call step 300, the third party call end step 400 is performed to indicate that the call is released by the third party. Call the called party and the original caller after the call to the called party's terminal, and if it is determined that the call conversion key is selected through the called terminal during the three-way call step, the called terminal and the original caller's terminal are connected, The call return step 500 for realizing the call of the called party and the original caller is performed.

In this case, after connecting the called party and the original caller, whether or not a new call connection request signal is continuously generated is detected through the third terminal. Return to the self-call request detection step (100).

In addition, when the caller terminal is connected to the caller terminal and the original caller terminal by performing the call recovery step 500, the sender terminal is continuously detected whether the send key is selected, and it is determined that the send key is selected. In case of returning to the third party call request detection step (100).

In addition, when performing a call recovery step 500, when a caller terminal is connected to a caller's terminal, a predetermined call holding sound is transmitted to a third party terminal.

This will be described in detail as follows.

First, when a mobile communication service subscriber who has registered a three-way call function receives an occupancy request (call connection request) through a third terminal while on a call, it is referred to as a location register (hereinafter referred to as LR) using the MSL 62. Information is retrieved, and the MCC _M 64 is notified.

The MCC processor then drives the MCAW 66. The MCAW 66 implements a call with a third party while processing an incoming call with the original caller.

At this time, the call conversion between the third party and the original caller is performed using the send key.

That is, the MSL 62, which is a system library, is used to combine the information of the LR, and if it is subscribed to the three-party call function, the call waiting service (the three-party call function service) is requested to the MCAW 66.

In addition, when the MCAW 66 receives the 3rd party service request signal, the MCAW 66 generates resources required for the 3rd party service and MCAW _C 67 to inherit the basic call process.

At this time, if necessary resources fail to generate or fail to generate MCAW _C 67, the call connection is released after transmitting a tone to the subscriber.

On the other hand, the generated MCAW _C 67 performs the incoming call processing for the incoming request of the third party while maintaining the call with the subscriber currently busy.

At this time, the subscriber terminal registered with the three-party calling function service transmits a waiting sound for notifying that there is a new call, and waits for a cent key from the called terminal.

Then, when a signal is received that the send key is selected, it sends a standby sound to the subscriber currently in a call and then talks with a third party.

On the other hand, when the called party and the third party receive a signal indicating that the send key is selected from the called party's terminal during the call, the called party and the third party are allowed to conduct a call with the original caller who is on hold and sends a waiting sound to the third party's terminal.

At this time, when one of the callers receives the three-party call function service and ends the call, the basic call control is requested and the function of the MCAW _C 67 is stopped.

In addition, when the registrant of the three-way calling service does not want to answer a call received through the third terminal, the send key does not need to be pressed for a predetermined time. At this time, the third party's terminal transmits a tone indicating that the call is in progress, and the user calls for a basic call control.

At this time, upon receiving the occupancy request from another terminal, the MCAW _C 67 provides the three-party call function again.

5 is a diagram illustrating an example of a waiting sound and a holding sound, and FIG. 6 is a signal flow diagram illustrating a process of performing the three-party call function.

As described above, the present invention "third party call device and method during a call in the mobile communication system", in particular, when a call connection request signal is generated through the third terminal during the call of the mobile communication subscriber, the MCC And, by performing the three-party call function by processing in the MSL and MCAW, there is an effect that it is possible to alternate the call between the original caller and the third party using the call phone key of the called party terminal.

Claims (12)

It consists of a terminal, a base station, a control station, an exchange station, and a home location register, and performs call connection control functions through a call control unit of the control station, a control station matching unit of the exchange station, a mobile call processing unit, and a visitor location register. In the call connection controller of the mobile communication system, The mobile call processor includes: a sub-call control unit for continuously detecting a paging request signal transmitted through a caller terminal and outputting a paging request signal or a three-way call function request signal when there is a paging request signal; A mobile call library for outputting a paging request signal when the paging request signal is transmitted from the sub-call control unit and for outputting a signal for performing the three-party call function when the three-party call function request signal is transmitted; A mobile paging control unit which receives a paging request signal transmitted from the mobile call library and outputs a signal requesting confirmation of a state of a mobile communication terminal to be connected or a signal requesting to perform a three-way call function; When the mobile paging control unit receives a signal requesting confirmation of the state of the mobile communication terminal to be connected, the mobile paging control unit detects a state of the mobile communication terminal to be connected, and transmits a signal indicating the state when the call is in a call state to the mobile paging control unit. And, in the mobile call library, when a signal requesting the performance of the three-party call function is transmitted, the main mobile call control unit for instructing the execution of the three-party call function; A mobile call control unit which is generated by the control of the main mobile call control unit and outputs a signal for requesting to perform a three-way call function; A call waiting service control unit which receives a signal transmitted from the mobile call control unit and controls a performance of a three-party call function; And a third party call service control unit which is generated by the control of the call waiting service control unit and performs a three party call function. A three-party call request detection step of continuously detecting whether a new call connection request signal has been generated from a third terminal to the mobile communication service subscriber in a call; If it is determined that a new call connection request signal is generated from a third terminal as a result of performing the three-party call request detection step, the third party call function service is performed to enable a third party call during the call. A transition determination step of waiting for a predetermined time whether or not a call forwarding key to be used when a caller is to be switched from a called party terminal is selected; If it is determined that the call conversion key of the called terminal is selected within a predetermined time as a result of performing the switching decision step, the third party which connects the called terminal and the third party terminal to make a call between the called party and the third party A call step; If the call between the called party and the third party is terminated during the third-party call step, a third party calling the called party and the original caller after transmitting a disconnection tone indicating the call disconnection of the third party to the called party's terminal; Ending the call; If it is determined that the call transfer key is selected through the called terminal during the third-party call step, the call returning step of connecting the called terminal and the original caller's terminal to realize the call of the called party and the original caller is included. A third party call method during a call in a mobile communication system, characterized in that. 3. The method of claim 2, wherein in the third party call request detection step, when it is determined that a new call connection request signal is generated from a third terminal, the mobile communication subscriber requesting an incoming call is subscribed to the service. The third party calling method of a mobile communication system, characterized in that the mobile communication system terminates after performing a busy processing if it is not subscribed. The method of claim 2, wherein if it is determined that the call forwarding key has not been selected for a predetermined time as a result of performing the transition determination step, the called party determines that there is no intention of leaving the caller. After performing the call, the third party call method during the call of the mobile communication system, characterized in that the call connection of the third party terminal to return to the third party call request detection step. The method of claim 2, wherein after the call connection is made between the called terminal and the third party terminal in the third party call step, whether the original caller disconnects the call is continuously detected, and the original caller releases the call connection. A third party call method during a call in a mobile communication system, characterized by transmitting a predetermined call release tone indicating a call disconnection of a caller to a called terminal. 6. The method according to claim 5, wherein after the call is released to the called party's terminal, the call disconnection tone indicating the call disconnection of the original caller is detected and the call with the third party is terminated. If the call with the third party is not terminated, the call connection is terminated. If the call with the third party is not terminated, a new call connection request is continuously detected by detecting whether a new call connection request signal has been generated through the third terminal. And if it is determined that a signal is generated, returning to the third party call request detection step. The mobile communication system according to claim 2, wherein after the call connection between the called terminal and the third party terminal in the third party call step, whether the call transfer key is selected through the called terminal is continuously detected. How to call a third party during a call. The mobile communication system of claim 2, wherein after the call terminal and the third party terminal are connected to each other in the third party call step, a predetermined call holding tone is transmitted to the terminal of the original caller. Three way call method. 3. The method of claim 2, wherein after performing the third party call termination step and connecting the called party to the original caller, whether or not a new call connection request signal is generated through a third terminal is continuously detected, and a new call connection is made. And if it is determined that the request signal has been generated, returning to the third party call request detection step. The method of claim 2, wherein when the caller terminal is connected to the caller terminal and the original caller terminal by performing the call return step, the third party terminal continuously detects whether the call is released, and the third party releases the call connection. And transmitting a predetermined call release tone indicating a call disconnection of the third party terminal to the called party terminal. The method of claim 2, wherein, when the caller terminal is connected to the called party's terminal by performing the call return step, the caller's terminal continuously detects whether a call forwarding key is selected through the called party's terminal, and the call forwarding key is selected. And if it is determined that the mobile communication system returns to the third party call request detection step, the third party call method of the mobile communication system. The mobile communication system of claim 2, wherein when a caller terminal is connected to a caller's terminal by performing the call recovery step, a predetermined call holding tone is transmitted to a third party terminal. Third Party Calling Methods.