KR100238719B1 - Three-way calling processing method for personal communication exchange - Google Patents

Abstract

The present invention provides a method for processing a three person call in a personal communication switching system in which three incoming and outgoing subscribers call a new subscriber in a normal call state so that the three can simultaneously perform a call operation.

Accordingly, the present invention provides a personal communication exchange having a personal communication switch connected to a plurality of base station controllers corresponding to a plurality of mobile subscriber stations, respectively, and connected to a plurality of ASS-Ws and HLRs via INS and ASS-T. A system, comprising: a first step of performing a call function with a called party subscriber terminal corresponding to a second subscriber according to a call setup request from a calling party subscriber terminal corresponding to a first subscriber; and originating corresponding to the first subscriber When requesting a 3-person call service by special key manipulation from the side subscriber terminal, the subscriber terminal side corresponding to the second subscriber is held according to the hook-flash operation, and the CMX device is allocated by requesting CMX connection. A second step of changing the switch information through the connection of the global switch and making a PCS call to the subscriber terminal of another third subscriber; and the third subscription If there is a call response from the subscriber's terminal, the call setup request message is sent to the ASS-W of the subscriber terminal corresponding to the third subscriber according to the addition request of the CMX device, and the call confirmation message for the call setup request message is transmitted. Receives the approval of the connection of the global channel to perform a call of the first subscriber and the third subscriber, and when a three-person call request key is input from the first subscriber, the holding tone of the second subscriber is released to release the first subscriber. And a third step of allowing the call of three persons in the subscriber terminal period corresponding to the second and third subscribers to be carried out.

Description

THREE-WAY CALLING PROCESSING METHOD FOR PERSONAL COMMUNICATION EXCHANGE}

The present invention relates to a three person call processing method in a personal communication exchange system, and more particularly, a personal communication that allows three people to talk simultaneously by calling a third subscriber in a call state of an incoming and outgoing subscriber. The present invention relates to a three person call processing method in an exchange system.

In general, for an exchange system in which only a function of call processing between wired subscriber terminals connected through a subscriber line is assumed, mobility is recently given to subscriber terminals, and call set-up and calls are minimized with local or local restrictions. Is available for personal mobile communication service.

According to the personal communication exchange for realizing the service function of such personal mobile communication, the individual is a wired / wireless integrated system in which the wireless subscriber processing function is added in addition to the existing service processing function for the wired subscriber. In addition to providing a variety of services guaranteed in the communication network to provide a variety of communication services provided in the existing network (網) to provide the interworking function with other networks (ISDN, PLDN, etc.) heterogeneous with the personal communication network.

1 is a schematic block diagram of a general personal communication exchange system. In the figure, reference numerals 10a to 10n denote subscriber terminals referred to as so-called 'mobile phones' for carrying out communication based on mobility while personal subscribers are portable, and reference numerals 20a to 20n denote multiple subscriber terminals and calls, respectively. A base station which transmits / receives processed data to perform transmission / reception of radio signals to each subscriber station, conversion of communication protocols, encryption / decryption, and the like.

In addition, 30a-30n are each subscriber station while managing a plurality of base stations.

A base station controller which performs functions related to allocation control of a communication channel for 10-10n, determination of handover, and the like.

In addition, 40 denotes a personal communication switch interfaced with the base station controllers 30a-30n; 30 in accordance with IS-651 / IS-634 standard, and 50 denotes a subscriber information management device (Home) described below for each subscriber station 10. It indicates an authentication center that is matched with a location register (HLR) and performs a license processing for an arbitrary subscriber station 10 or the like.

In addition, reference numeral 60 denotes a personal communication switch of another station for mutual communication of communication information by being interconnected with the personal communication switch 40 through a trunk medium.

2 is a view for explaining a schematic configuration of the personal communication switch 40 shown in FIG. 1, in which 72a to 72n correspond to the base station controllers 30a to 30n to perform wireless mobile communication. An access switching subsystem for wireless subscriber (ASS-W) for executing the call processing function of the subscriber station 10 for. Here, the ASS-W (72a-72n) has a systemic horizontal structure so that it can be expanded in units of ASS-W if necessary, while performing the call processing function or self-operation maintenance function for most mobile communication. Will have In addition, 74 denotes a conventional wired analog subscriber terminal, and 76 denotes an access switching subsystem for subscriber (ASS-S) for executing the call processing function of the wired analog subscriber terminal 74. As shown, the ASS-S 76 also performs most of the call processing function for the wired subscriber terminal 74 or its own operation maintenance function, and if necessary, the system can be expanded in units of the ASS-S. It will have a horizontal structure.

In FIG. 2, reference numeral 78 denotes the overall call processing of the corresponding personal communication switch 40 through the data link (ie, the optical link) for the ASS-W 72 (72a-72n) and the ASS-S 76. / Interconnection network subsystem (INS) responsible for administrative control, the INS (78) is the ASS-W / ASS-S (72, 76) for the configuration of the switching network (TST) In addition to the space switch (Space switch) associated with the time switch (T) located in the store, the storage and management of information about the subscriber station 10 existing in the service area of the corresponding personal communication switch 40 The VLR (Visitor Location Register) is located for the mobility management function. Here, the VLR temporarily stores the entire information about the subscriber station 10 existing in the area managed by the corresponding personal communication switch 40, and the information is set by the personal communication subscriber. In response to a request of the personal communication switch 40, the personal communication switch 40 is transmitted to the personal communication switch 40, and the information in the VLR is continuously modified as the subscriber terminal 10 moves.

In FIG. 2, reference numeral 80 denotes an access switching subsystem for trunk (ASS-T) for relay line matching between the personal communication switch 60 of the other station. 80) includes a public switched data network (PSDN) and a comprehensive information and communication network for the unification of exchange / transmission / subscriber terminals on the premise of digital technology to provide telephony / telephone and various non-system-based services. Integrated service digital network (ISDN), which has at least one in a personal communication network, functions as a database management system that stores and manages subscriber parameters and location information for all terminals registered in its PCN, while providing access to subscriber terminals. In addition to registering important data including basic services and supplementary services, the routing function of the called party A home location register (HLR) that performs the operation is connected.

Also, reference numeral 82 is connected to the INS 78 via a data link to access the No. 7 signaling matching subsystem for SS No-7 signal processing matching (ASS-7). ).

In FIG. 2, reference numeral 84 is a signal control (Work station) connected to the INS 78 (Central control system) consisting of a processor and a peripheral device for performing the overall operation management and maintenance functions of the corresponding exchange CAMA that collects and processes billing data transmitted from the exchange 40 while interworking with the CCS 78 for the corresponding exchange 40 according to the ″ connection standard between the personal communication exchange / billing center ″. A centralized authomatic message accounting (86) is connected, and the exchange 40 is linked by ″ TMN Q interface ″ to perform centralized operation / maintenance / maintenance functions for the entire component of the personal communication network. An operation and maintenance center (OMC) and a network management center (NMC) 88 for managing a personal communication network are connected.

According to the personal communication switching system having such a configuration, for example, when call setup is required from a mobile subscriber station (e.g., 10a) accommodated in the base station controller 30a, the personal communication switch 40 from the base station controller 30a according to the call setup request is required. In response to the call establishment request, the ASS-W 72a of the ASS-W 72a executes call setup processing for a mobile subscriber station or a wired subscriber terminal (e.g., 74) of an incoming destination accommodated in its own country, or a personal communication switch (e.g., 60) of another station. The call establishment process for the received mobile subscriber station or wired subscriber terminal is governed, and the billing information is processed and delivered to the CAMA 86 through the CCS 84 for such call establishment request.

In addition, when a call setup is generated and transmitted to a mobile subscriber station (for example, 10a) received in the home country, the corresponding ASS-W 72a and the base station controller 30a of the personal communication switch 40 are transmitted. Call setting processing is performed for the subscriber station 10a to be received.

On the other hand, in such a personal communication exchange system, an arbitrary calling party functions as a controlling subscriber, calling a predetermined desired called party, and the function of calling two people as a basic function is given, and further, three subscribers simultaneously. Since the call function is being adopted, performance algorithms and control procedures (that is, call setup or call release or call of other calls) to smoothly and stably perform these simultaneous call functions of three people are required.

The present invention has been made in view of the above circumstances, and a three-person call in a personal communication exchange system in which two incoming and outgoing subscribers call a new subscriber in a normal call state so that three people can simultaneously perform a call operation. The purpose is to provide a treatment method.

According to the three-person call processing method in the personal communication exchange system according to the present invention to achieve the above object, a plurality of mobile subscriber station is connected via a plurality of base station controllers corresponding to a plurality of ASS-W and In a personal communication exchange system having a personal communication switch connected to an HLR via INS and ASS-T, a called party corresponding to a second subscriber according to a call setup request from a calling party subscriber terminal corresponding to a first subscriber. The first step of performing a call function with the subscriber terminal and the request of the three-person call service by the special key manipulation from the calling party subscriber terminal corresponding to the first subscriber correspond to the second subscriber according to the hook-flash operation. By holding the subscriber terminal side, the CMX connection is requested, the CMX device is allocated, and the switch information is changed through the connection of the global switch. The second step of making a PCS call to the subscriber terminal of another third subscriber, and when there is a call response from the subscriber terminal of the third subscriber, the subscriber terminal corresponding to the third subscriber according to the addition request of the CMX device. Sends a call setup request message to ASS-W of the call, receives a call confirmation message for the call setup request message, approves the connection of the global channel, performs a call between the first subscriber and the third subscriber, and the first subscriber. A third-party personal communication exchange in which a third person call request key is inputted from the third subscriber to release the holding tone of the second subscriber to perform a three-person call of the subscriber terminal period corresponding to the first, second and third subscribers. Provides a three person call handling method in the system.

According to the present invention configured as described above, in a personal communication exchange system for making a call setting for a call function of a plurality of mobile subscriber station periods, another call may be generated during a call operation according to a call setup between a predetermined calling party and a called party. Three-way call with three subscribers can be made according to the request of three-way call service by the calling subscriber.

1 is a view showing a general personal mobile communication system,

2 is a block diagram showing the configuration of the exchange shown in FIG. 1;

3 is a block diagram showing the main parts of the personal communication switch shown in FIG. 2 to which the three-person call processing method in the personal communication exchange system according to the present invention is applied;

4 is a flowchart illustrating an operation for a procedure of setting up a three-way call in accordance with a preferred embodiment of the present invention;

5 is a flowchart illustrating a setting procedure of a hawk-on when a master subscriber is in a three-way call according to a preferred embodiment of the present invention;

6 is a flowchart illustrating an operation when a hook flash is received during a three-way call according to a preferred embodiment of the present invention;

7 is a flowchart illustrating a call setup procedure at the time of digit reception according to a preferred embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: subscriber terminal, 20a to 20n: base station,

30a to 30n: base international flag, 40: exchanger,

50: authentication center, 72a to 72n: ASS-W,

78: INS.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

That is, FIG. 3 is a block diagram showing the main parts of the personal communication switch shown in FIG. 2 to which the three-person call processing method in the personal communication exchange system according to the present invention is applied. ASS-W, denoted by 72c, is located between the base station and the switch, and performs each function of BSCa, which performs all functions required for radio call processing such as control of a wired / wireless link, base station management, transcoding, handoff control, etc. b, c (90a, 92a, 94a), SCCPa, b, c (90b, 92b, 94b), each of which transfers DTAP or BSSMAP messages from P7SDH to PCSI, exchange and each base station controller 30a, 30b, It is composed of each PCSIa, b, c (90c, 92c, 94c), software that handles the link management function between the 30c), the base station system application part (BSSAP) function, and some mobility management (MM) access processing functions. Process personal subscriber signal received from PCSI and subscribe to personal communication Each PCCa, b, which collects information necessary for self-processing, collects roaming numbers of called subscribers from HLR, requests number translation from NTR 96b, and controls signaling equipment and switch connection through LSL. c (90d, 92d, 94d), when the mobile subscriber requests supplementary services while idle, on call, or during call setup or call release, the control is transferred from the basic call control block that receives the supplementary services. It is composed of each PSSCa, b, c (90e, 92e, 94e) and software which performs the processing in the block in case of inheriting control or in case of service registration, deletion, etc. Each CSLa, b, c (90f, 92f, 94f) is included to assist in the calculation of statistics on them in case of occupation, response, termination, or failure in processing.

In addition, the INS indicated by the reference numeral 78 is used when the subscriber who has registered the three-person service to control the multiple call service such as the three-way service (TWC) or the conference call service (CC) is in an outgoing or incoming call state. PMULC (96a) to make a Send Key (hook flash) and call a new subscriber so that three people can talk at the same time, and interlock with statistics and billing block for statistical information and billing information generated during the service, Function to handle outgoing call, incoming call, and transit call by translating international number, area code, station number, translating caller's number, processing caller's information and special number by translating special number NTR (96b) in charge of processing the separate reception function, transmits R2 MFC and DTMF signals, continuity tones and audible tones to provide signaling services used for call connection and progress. Or TLSI 96c for receiving or receiving, SNC 96d for allocating and releasing a TST switch channel of a corresponding system for connection or release of a call, and a space for connecting / disconnecting a call from the SNC 96d. Recorded for calls using unidirectional voice paths such as SSW (96e), recording guidance, which performs the function required to connect / disconnect the switch and periodically or aperiodically tests the control memory to improve reliability on the call path. GSC (96f) that retrieves and manages the output information of guide devices and manages assignment and release of call mixers for conference calls using call mixers, and GSIs that provide recording guidance services and conference call services. And 96g.

The ASS-T, denoted by the reference numeral 80, operates a signal operation so that the INS 78 can access the HLR.

Next, the operation of the present invention made as described above will be described in detail with reference to the flowcharts of FIGS. 4 to 7.

First, a three-party call call setup procedure will be described with reference to the flowchart of FIG. 4.

That is, in step 100, when the first subscriber of the first subscriber terminal 10a and the second subscriber of the second subscriber terminal 10b are in a call, the process proceeds to step 101 and passes to the first subscriber side ASS-W 72a. When the hook flash from the provided BSCa 90a is delivered to the PCSIa 90c, the process proceeds to step 102 where the PCSIa 90c prepares the hook flash report.

Then, in step 103, the PCSIa 90c requests the PCS service to the PCCb 92d of the second subscriber side ASS-W 72b via the INS 78, and prepares an authentication report. In the PSSCb 92e is held by the second subscriber.

Subsequently, the process proceeds to step 105 where the PSSCa 90e requests the CSLa 90f to cut the call path with the second subscriber side, and in step 106 the PSSCb 92e calls the CSLb 92f with the first subscriber. The path is cut and proceeds to step 107 to request the holding tone to be connected to CSLb 92f.

At this time, in step 108, the PSSCa 90e requests the PCS 3 call service to the PMULC 96a after confirming the 3 call through the call status indication information. In step 109, the PMULC 96a requests the PCS 3 call service. The three-party call service is notified to the PSSCb 92e, and the GSC 96f is requested to connect the CMX.

Accordingly, in step 110, the PMULC 96a requests the connection of the CMX to the GSC 96f, and the GSC 96f requests the allocation of the CMX device to the GSI 96g to report the allocation of the CMX device. Subsequently, the process proceeds to step 111 to request the connection of the global service channel to the SNC 96d, while the SNC 96d requests the connection of the global switch to the SSW 96e and the global switch to the GSC 96f. The GSC 96f is notified of the switch connection by requesting the TLSI 96c to connect the time switch for the global service.

The GSC 96f then notifies the PMULC 96a of the connection of the CMX. In step 113, the PMULC 96a requests the CSLa 90f to change the switch information. The PSSLb 92e is also requested to change the switch information so that the CSLb 92f changes the switch information.

At this time, in step 114, the PMULC 96a requests the number translation for the incoming call to the CSLa 90f so that the number translation can be requested to the NTR 96b, thereby calling the PCS from the NTR 96b. The report is prepared and sent out, and the flow proceeds to step 115 where the HLR is requested for the call location information for the mobile subscriber and the PCS local call is notified.

Subsequently, in step 116, the PMULC 96a makes a call request to the PCCc 94d to perform a call procedure with the third subscriber side of the third subscriber station 10c, and the PCSIc 94c and the SCCPc 94b. The call response is received through the call processing operation of the BSCc 94a, and the PCCc 94d is notified of the occupancy of the called subscriber.

Then, in step 117, the PMULC 96a requests the GSC 96f to add the CMX device and is informed of the addition of the CMX device through the control procedure with the GSI 96g. In the TLSI 96c, the PMULC 96a receives the addition of the CMX device. The GSC 96f is requested to add a time switch global service to notify the addition of the global service, while notifying the PCCc 94d of the CMX channel.

On the other hand, the flow proceeds to step 118 where the PCCc 94d notifies the CSLc 94f of storing the CMX service channel, and the call setup request message is processed by the processing of the PCSIc 94c, the SCCPc 94b, and the BSCc 94a. The call confirmation message is generated.

Then, the process proceeds to step 119 where the PCCc 94d notifies the PMULC 96a via the SCCPc 94b and the PCSIc 94c, and notifies the called party. 94d) notifies the PMULC 96a of the called party's response.

As a result, the process proceeds to step 121 where a call between the first subscriber by the first subscriber terminal 10a and the third subscriber by the third subscriber terminal 10c is performed.

In this state, when the process proceeds to step 122 and the special key is pressed from the side of the first subscriber terminal 10a according to the first subscriber to enable the three-person call, the process proceeds to step 123 and the PCSIa (BSCa 90a) is performed. The hook flash is reported to the PMULC 96a via 90c.

Accordingly, in step 124, the PMULC 96a requests the PSSCb 92e to release the holding tone, and the PSSCb 92e requests the CSLb 92f to connect the call path for the three-person call. Is connected to enable the three-person call for the first, second and third subscribers.

Next, the setting procedure in the case where the master subscriber (ie, the first subscriber) is hooked on during the three-person call in the present invention made as described above will be described in detail with reference to the flowchart of FIG. 5.

First, in step 200, the BSCa 90a notifies the PCSIa 90c of the release of the calling subscriber, and the PCSIa 90c notifies the PMULC 96a of the release so that the PSSCb 92e releases the calling subscriber. You will be notified.

Accordingly, in step 201, the PMULC 96a requests the release of the CMX to the GSC 96f. The PMULC 96a requests the release of the CMX device to the GSI 96g. In step 202, the GSC 96f requests the release of the CMX device. The TLSI 96c requests the release of the global service time switch, requests the SSW 96e to release the switch, and is notified of the release of the switch.

In step 203, the PMULC 96a sends a release message to the PCSIa 90c. In step 204, the idle state of the calling subscriber is registered, and the called party notifies the idle state. Done.

Next, the setting operation upon receiving the hook flash during the three-way call in the present invention made as described above will be described in detail with reference to the flowchart of FIG. 6.

First, in step 300, the BSCa 90a receives the hook flash and reports it to the PCSIa 90c, and reports to the PMULC 96a. The process proceeds to step 301 where the PMULC 96a receives the hook flash. The PSSCc 94e is requested to release the subscriber. Accordingly, the third subscriber side is released and requests a message idle state from the PSSCc 94e.

Then, the process proceeds to step 302 where the PMULC 96a requests the CSC release from the GSC 96f, and the GSC 96f requests the SSW 96e to release the switch and the TLSI 96c. Will ask you to release the time switch.

Subsequently, in step 303, the GSC 96f requests the holding tone to be connected to the PSSCb 92e, so that the PSSCb 92e requests the holding of the CSLb 92f and the connection of the holding tone. .

Next, the call setting operation at the time of digit reception in the present invention made as described above will be described in detail with reference to the flowchart of FIG.

First, in step 400, the BSCa 90a receives the digit, reports the digit information to the PCSIa 90c, and reports the digit information to the PMULC 96a. The PMULC 96a transmits the NTR through the CSLa 90f. At (96b) a translation of the number is required.

Accordingly, the process proceeds to step 401 where the PMULC 96a reports the PCS call information from the NTR 96b, reports the mobile subscriber incoming call to the HLR, and notifies the home country incoming signal.

Further, the process proceeds to step 402 to request the translation of the TLDN to the HLR, to request the call to the NTR 96b to be informed of the PCS call, and to request the call to the PCCc 94d to make the call through the BSCc 94a. A call response is executed from PCSIc 94c to PCCc 94d.

The PCCc 94d then notifies the PMULC 96a of the occupancy of the called subscriber by proceeding to step 403.

Meanwhile, in step 404, the PMULC 96a requests the addition of a CMX device to the GSC 96f, so the GSC 96f requests the addition of a CMX device to the SCI 96g and is notified of the device addition. By requesting the connection of the global channel to 96d, the channel connection is notified, and the PMULC 96a is notified of the connection of the CMX.

Subsequently, the process proceeds to step 405 and a call setup request message and a call confirmation message are sent. In step 406, the BSCc 94a is notified of an incoming call and the PMULC 96a is received through the PCSIc 94c and the PCCc 94d. The subscriber will be reported.

Then, in step 407, the BSCc 94a notifies the PMULC 96a of the response information when the called subscriber responds, and the flow proceeds to step 408 where the call of the first subscriber and the third subscriber proceeds. . At this time, when the first subscriber performs the hook flash, the call is also possible with the second subscriber and a three-way call can be made.

On the other hand, if the hook flash is detected in step 409, the BSCa 90a reports the hook flash state to the PMULC 96a via the PCSIa 90c, and thus the CMX from the PMULC 96a to the GSC 96f. The release request is for the release of the CMX device to the GSI 96g. In step 410, the release of the time switch is requested to the LSI 96c.

Subsequently, the process proceeds to step 411, which requests the connection of the control switch to the PSSCb 92e on the second subscriber's side, requesting the release of the tone and the release of the switch to the CSLb 92f, and the space switch to the SNC 96d. You will be asked for a connection.

At this time, in step 412, the SSW 96e reports the connection of the switch to the PSSCb 92e under the control of the SNC 96d, and the PSSCb 92e stores the switch information in the CSLb 92f. . Accordingly, the CSLb 92f notifies the PMULC 96a of the connection of the control switch, and the PMULC 96a requests the PSSCb 92e to release the holding tone.

Then, in step 413, the PMULC 96a requests the PSSCb 92e to change to the normal state to request normal PCS control to the PCCb 92d, and if the change to the normal state is tolerated, the PCCa ( 90d) requires normal PCS control.

According to the present invention made as described above, even if a two-way call between the called party and the calling party is in progress, there is an advantage that the three-person call with another subscriber can be easily executed.

Claims (1)

In the personal communication exchange system having a personal communication switch connected with a plurality of base station controllers respectively corresponding to a plurality of mobile subscriber station via a plurality of ASS-W and HLR connected through the INS and ASS-T, A first step of performing a call function with a called subscriber terminal corresponding to the second subscriber according to a call setup request from the calling subscriber terminal corresponding to the first subscriber; When a 3-person call service is requested by a special key manipulation from the calling party's subscriber terminal corresponding to the first subscriber, the subscriber terminal corresponding to the second subscriber is held according to the hook-flash operation and the CMX connection is established. A second step of allocating a PCS call to another third subscriber's subscriber terminal by allocating a CMX device on demand, changing switch information through a global switch connection, and When there is a call response from the subscriber terminal of the third subscriber, according to the addition request of the CMX device, a call setup request message is sent to the ASS-W of the subscriber terminal corresponding to the third subscriber, and the call setup request message is sent to the call setup request message. Receiving a call confirmation message for a global channel to approve the connection of the global channel to perform a call of the first subscriber and the third subscriber, and when a three-way call request key is input from the first subscriber, the holding tone of the second subscriber is released. The third person call processing method of the personal communication switching system comprising a third step to perform a three-way call of the subscriber terminal period corresponding to the first, second and third subscriber.