KR19980063112A - Method of handling incoming call in personal communication exchange system - Google Patents

Abstract

The present invention relates to a method for processing incoming calls in a personal communication switching system that enables relaying of incoming calls from PSTN fixed subscribers of other stations to its own mobile subscribers. The present invention relates to a plurality of base stations each corresponding to a plurality of mobile subscriber stations. In a personal communication exchange system having a plurality of ASS-Ws connected through a controller and a personal communication switch connected to an HLR via INS and ASS-T, a request from a foreign exchange switch 60 in which a PSTN fixed subscriber is accommodated. The first step of occupying the incoming relay line by the second step, the second step of receiving the called party transmitted from the other station switch 60 and forwarding the called party number to the UPC 80c of the ASS-T 80, the UPC ( When routing information is requested from 80c and a routing information response message output from the HLR 100 is transmitted to the UPC 80c in response to the request, the UPC 80c sends the NTR 78c of the INS 78. Unblocked by A third step of requesting the translation and in response to the request, the NTR 78c notifying the UPC 80c of its own personal communication number according to the number translation result, and a fourth requesting paging for the mobile subscriber A fifth step of connecting each switch channel and the calling party's call path in response to the request; connecting the called party's call path to establish a call path between the calling mobile subscriber of the foreign exchange 60 and the local destination subscriber. A sixth step, in which the called mobile subscriber makes a call in response to the call, and when the corresponding outgoing mobile subscriber of the foreign exchange 60 cuts the call, the relay line is cut in all directions, and then the corresponding relay line is restored. After cutting the TST switch is characterized in that the eighth step to release the call.

Description

Method of handling incoming call in personal communication exchange system

The present invention relates to an incoming call processing method in a personal communication exchange system, and more particularly, an incoming call in a personal communication exchange system capable of relaying outgoing signals from PSTN fixed subscribers of other countries to the destination mobile subscribers. It relates to a call processing method.

For exchange systems where only the functions for call processing of wired subscriber terminal periods connected through subscriber lines of well-known schemes are assumed, mobility is recently given to subscriber terminals, and call establishment and The personal mobile communication service function is enabled.

According to a personal communication exchange (PCX) for realizing such a service function of personal mobile communication, a wired / wireless integrated system in which a wireless subscriber processing function is added in addition to a service processing function for an existing wire subscriber. In addition, to provide various services guaranteed in the personal communication network and 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 to 30n indicate a base station controller which manages a plurality of base stations and performs functions related to allocation control and hand-off of communication channels for the subscriber stations 10-10n.

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 entirety of the corresponding personal communication switch 40 through a data link (ie, an optical link) for the ASS-W 72 (72a-72n) and the ASS-S 76. Interconnection network subsystem (INS) in charge of call processing / administrative control (INS), the INS (78) is the ASS-W / ASS-S (72) for the configuration of the switching network (TST) And a space switch associated with the time switch T located at 76, and storing information on the subscriber station 10 existing in the service area of the corresponding personal communication switch 40. And a VLR (Visitor Location Register) is located for mobility management functions such as management. Here, the VLR temporarily stores the entire information about subscriber terminals 10, --- existing in the area managed by the corresponding personal communication switch 40, and the information is called by the personal communication subscriber. In the case of setting a, it is transmitted to the personal communication switch 40 in response to a request of 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 denotes a central control system composed of a processor and a peripheral device for performing a comprehensive operation management and maintenance function of a corresponding exchange by signaling with the INS 78 (Work station). control system (CCS), and the CCS 78 collects and processes the charging data transmitted from the exchange 40 while interworking with the corresponding exchange 40 according to the connection standard between the personal communication exchange and the charging center. A centralized authomatic message accounting (CAMA) 86 is connected to the switch 40 to perform a centralized operation / maintenance / maintenance function for all components constituting the personal communication network while interworking with the TMN Q interface. 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. 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 in response to the call setup request, or a personal communication switch (e.g. The call establishment process for the mobile subscriber station or the wired subscriber terminal accommodated in 60) is governed, and the billing information is processed and transferred 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 the personal communication exchange system described above, when a PSTN fixed subscriber of another station calls its own mobile subscriber, the private communication exchange system is capable of relaying a call between the PSTN fixed subscriber of its own country and its mobile subscriber in response to the call. Incoming call processing method is urgently required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a method for processing incoming call in a personal communication exchange system capable of relaying outgoing signals from PSTN fixed subscribers of other countries to a destination mobile subscriber. have.

According to one embodiment of the present invention for realizing the above object, a plurality of mobile subscriber stations are each connected to a plurality of base station controllers through a plurality of ASS-W, INS and ASS-T via the HLR is In a personal communication switching system having a connected personal communication switch, a first step in which a PSTN fixed subscriber occupies an incoming line by a request from a foreign station accommodating an accommodating terminal, receives a called number transmitted from a mobile station of another station, and receives the incoming number In a second step of transmitting the number to the UPC of the ASS-T, if routing information is requested from the UPC and a routing information response signal output from the HLR is transmitted to the UPC in response to the request, the UPC transmits the NTR of the INS. The third step of requesting the translation of the unblocked station number and in response to the request, the NTR notifies the UPC of its own personal communication number according to the result of the number translation. The fourth step, which requires paging for the called party, the fifth step of connecting each switch channel and the calling channel in response to the request, and the calling mobile subscriber of the other exchange by connecting the called party. A sixth step of establishing a call path between the callers; a seventh step of the called party subscriber performing a call in response to the call; An incoming call processing method in a personal communication switching system comprising an eighth step of releasing a corresponding call by cutting a TST switch after restoring the relay line is provided.

According to the present invention made up of the above steps, when a foreign PSTN fixed subscriber calls a local mobile subscriber, the call between the foreign PSTN fixed subscriber and the local mobile subscriber can be relayed in response to the call.

1 is a diagram illustrating a general personal mobile communication system;

FIG. 2 is a schematic block diagram of the exchanger shown in FIG. 1;

FIG. 3 is a block diagram of an essential part of the personal communication exchange shown in FIG. 2 executing the incoming call processing method in the personal communication exchange system according to the embodiment of the present invention; FIG.

4 is a flowchart illustrating an incoming call processing method in a personal communication exchange system according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: subscriber station, 20a-20n: base station,

30a-30n: base station controller, 40: exchanger,

50: Certification Center, 72a-72n: ASS-W,

78: INS, 80: ASS-T,

100: HLR.

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

3 is a block diagram of a personal communication exchange system to which an incoming call processing method is applied according to an embodiment of the present invention, which is a mobile subscriber (ie, a local mobile subscriber by a PSTN fixed subscriber housed in another switching center 60). In this case, it is assumed that the local subscriber station 10a) is called.

In the figure, reference numeral 60 denotes a foreign exchange that accommodates a plurality of Public Switched Telephone Network (PSTN) subscribers and performs various call processing operations in response to call processing requests from the PSTN fixed subscribers.

In addition, the ASS-W, denoted by reference numeral 72a, is connected to the corresponding base station controller 30a via a signaling connection control part (SCCP) (not shown) to signally connect the corresponding switch 40 and the base station controller (BSC); A PCS interface control (PCSI) 72a-1 for processing a link management function used between 30a), a base station system application part (BSSAP) function, and a partial mobility management (MM) connection maintaining function; In order to handle personal mobile communication subscriber signals from the PCSI 72a-1 while managing the outgoing / receiving process of the personal mobile communication subscriber station, collection of information necessary for call processing, request for number translation, connection of signal equipment and switch PCC (PCS call control) 72b-2 to control the; TLSI 90a-3 which provides a signaling service used for call connection and progression by performing a function of transmitting or receiving R2 MFC and DTMF signals, continuity tones and audible tones; It consists of a command procedure for use in various execution modules by combining the processing of T-switch, signal device, tone generator, and concentrator, and a local service software shared library (LSA) 72a-4 composed of a database. . Such a configuration also applies equally to the ASS-Ws 72b, -72n corresponding to the base station controllers 30b, ---, 30n in which the subscriber stations 10b, ---, 10n are accommodated. .

In addition, the INS indicated by the reference numeral 78 includes an LCC (LR call control) 78a for providing data required for mobile subscriber call processing, and the LCC 78a is the PCC 72a- when the mobile subscriber makes an outgoing call. 2) If mobile subscriber information is provided or the mobile subscriber of the called party responds to paging, the mobile subscriber information of the called party becomes the call control block, and the TLDN is allocated when the mobile subscriber receives a TLDN assignment. The function will be performed. In addition, the INS 78 may include: a location register service control (LRSC) 78b which performs an operation processing procedure for an interface between an LCC 92a as a personal communication application unit (MAP), an LLU and a question-and-answer operation (TCAP); A number translation unit (NTR) for obtaining and processing information of a called party by translating an incoming / outgoing call, an incoming call while translating an international number, an area code, and a country code; Switching network control (SNC) 78D which performs a function of assigning and releasing for connection / release of a call to a channel of an entire switch (T-S-T switch network) of a personal communication system; Operational procedures such as access to TACP, application processor-to-action associations, management of indication and dialog numbers, basic incubation and decryption of component parameters with reference to action / error definitions, action class and timer values CPSC (Call Processing Service Control) 78d which performs a display function; Switching network control (SNC) 78e, which performs the function of assigning and releasing calls for connection / disconnection of calls to the channels of the entire switch (T-S-T switch network) of the personal communication system; A space switch (SSW) 78f which performs a connection / disconnection request from the SNC 78e to a call; It further comprises a RCO (78g). In addition, the INS 78 is connected to the HLR signally through the ASS-T (80) to access the HLR.

The ASS-T, denoted by the reference numeral 80, performs most call processing functions other than matching and number translation for the relay line, and MTP (Message Transfer) for reliably delivering signal units in the correct order in SS No.7 Signaling. SMSH (Signaling Message Handing Subsystem; 80a) which performs a Part) function and a Signaling Connection Control Part (SCCP) function, and performs a test and maintenance function of signal link and signal routing; UPI 80b; UPC 80c; TLSI 80d; LSL 80e and; It is comprised including the MDGI 80f.

Next, the incoming call processing method in the personal communication exchange system according to the embodiment of the present invention configured as described above will be described in detail with reference to the flowchart shown in FIG.

First of all, the foreign exchange switch 60 in which the PSTN fixed subscriber is accommodated starts to occupy the incoming start address message (IAM message; outgoing line) from the foreign exchange switch 60 to the SMHS 80a configured in the ASS-T 80. Forward the message to forward the required number and other information), the SMHS 80a forwards the received IAM message to the UPI 80b, and the UPI 90b sends the corresponding IAM message to the UPC ( 80c), the UPC 80c transfers the IAM message to the MDGI 80f to perform the incoming line occupancy procedure (step 200).

Then, if a continuity test is required, a continuity procedure is performed according to the step (step 210), followed by analyzing a prefix received from the other exchange 60 and receiving a called number (step). 220).

That is, in step 220, a subsequent address message (SRM message) for the called party number information transmitted from the foreign exchange 60 is sent in the forward direction following the first address message when the called party number information is transmitted from the SMHS 80a. When received, the SMHS 80a forwards the called number according to the SRM message to the UPI 80b, and the UPI 80b sends the called number to the UPC 80c, which is the UPC 80c. On the basis of the called party's number, it determines whether the number of received digits ≥ station number is analyzed, and if it is determined that the number of digits received ≥ station number is analyzed, the station number translation is requested to the NTR 78c of the INS 78. do. Subsequently, when the NTR 78c notifies the UPC 80c of its own personal communication number in response to the request, the UPC 80c determines whether the number of received or received digits ≥ the maximum number of digits is determined. If the result of the determination is not 'the number of received or received digits ≥ maximum number of digits', additional digits are received based on the SAM message from the foreign exchange 60 through the SMHS 80a and the called number is recalled accordingly. Notify the UPI 80b. Accordingly, the UPI 80b notifies the called party to the UPC 80c. At this time, the UPC 80c determines whether the number of received or received digits ≥ the maximum number of digits is determined and the determination result is' If the number of received or received digits ≥ the maximum number of digits' is reached, the process proceeds to step 240, which will be described later, to perform a paging request procedure.

On the other hand, the UPC 80c notified of the called number from the UPI 80b requests routing information to the CPSC 78d of the INS 78 to perform the routing information request procedure in step 230. In the above, when the UPC 80c notified of the called number from the UPI 80b requests routing information from the CPSC 78d of the INS 78, the CPSC 78d receives the ASS-T ( As the routing information is requested to the HLR 100 through 80, the HLR 100 transmits a routing request message to the LRSC 78b in response to the request.

The LRSC 78b receiving the routing request message forwards the routing request message to the LCC 78a, and the LCC 78a analyzes the internal data structure of the called party in response to the request and then receives the call. After checking the subscriber's status information (activating call waiting function during a call), assigning TLDN (Temporary Local Directory Number) as a response message of the corresponding routing information request message, and putting the information into the routing information response message to display the LRSC (78b). ), The LRSC 78b transmits the corresponding routing information response message to the HLR 100.

Subsequently, when the HLR 100 transmits the routing information response message assigned with the TLDN to the CPSC 78d, the CPSC 78d transmits the routing information response message with the corresponding TLDN assigned to the ASS-T 80. The UPC 80c requests the unblock station number translation to the NTR 78c of the INS 78, and in response to the request, the NTR 78c performs the number translation. Next, the local personal communication number corresponding to the result is notified to the UPC 80c.

After the routing information request procedure in step 230 is performed through the above process, the paging request procedure according to step 240 is performed.

On the other hand, in step 240, if the UPC (80c) transfers the mobile destination paging request message to the LCC (78a) of the INS 78, the LCC (78a) after the LAI is examined the subscriber station corresponding to the called number ( 10a) transmits a paging request message to the PCC 72a-2 of the ASS-W 72a connected thereto. In this state, the PCC 72a-2 transmits the paging request message to the PCSI 72a-1 and then transmits a predetermined response signal to the UPC 80c.

Meanwhile, the PCSI 72a-1 receiving the paging request message from the PCC 72a-2 transmits a paging request message to the base station controller 30a through the SCCP to perform a paging procedure. In response, the base station controller 30a transmits a paging response message to the PCSI 72a-1 through the SCCP, and the PCSI 72a-1 delivers the corresponding paging response message to the PCC 72a-2. do.

Subsequently, the PCC 72a-2 delivers an incoming subscriber authentication request message to the LCC 78a, and the LCC 78a delivers a corresponding subscriber authentication request message to the LRSC 78b, and the LRSC ( 78b) requests the authentication of the called party to the HLR 100 through the ASS-T 80. In response to the authentication request, the HLR sends the authentication result of the called party according to the response of the called party to the INS (T). 80 to the LRSC 78b, and the response signal according to the called party authentication is transmitted to the PCC 72a-2 via the LRSC 78b and the LCC 78a, based on the response signal. Thus, the PCC 72a-2 determines whether the authentication result and the unique attempt are applied.

As a result of the determination, if the authentication fails and a unique attempt is applied, the process proceeds to step 118 to request authentication to the PCSI 72a-1 of the ASS-W 72a, and in response to the authentication request, the PCSI 72a. In the case of -1), the SCCP transmits a signal connection setting message for the authentication request to the SCCP. Accordingly, the SCCP transmits a connection establishment message for the authentication request to the base station controller 30a.

Therefore, the base station controller 30a transmits a response message to the SCCP in step 120, and transmits an authentication response message to the PCSI 72a-1 of the ASS-W 72a in the SCCP. The PCSI 72a-1 transfers the authentication response to the PCC 72a-2.

On the other hand, if authentication is successful and the encryption is applied, the PCC 72a-2 of the ASS-W 72a transmits an encryption command to the PCSI 72a-1, and the PCSI 72a-1. ) Transmits an encrypted mode command message to the SCCP. Accordingly, the SCCP transmits an encrypted mode command data message to the base station controller 30a.

In response to the command, if the base station controller 30a transmits a data message indicating completion of the encryption mode to the SCCP in step 138, the SCCP sends an encryption mode to the PCSI 72a-1 of the ASS-W 72a. The PCSI 90a-1 of the ASS-W 72a notifies the PCC 72a-2 of the encryption completion.

Subsequently, as the PCC 72a-2 requests the called party information to the LCC 78a of the INS 78, the LCC 78a responds to the request and returns the called party information to the PCC 72a-2. The PCC 72a-2 then requests the subscriber information to the UPC 80b of the ASS-T 80.

After the paging request procedure in step 240 is performed through the above-described process, the switch connection procedure of step 250 is performed by the UPO 80c requesting the switch channel connection to the LSL 80e.

In step 250, if the UPO 80c requests the switch channel connection to the LSL 80e as described above, the LSL 80e requests the switch channel connection to the SNC 78e of the INS 78. The UPO 80c notifies the switch channel connection request, and in response to the request, when the SNC 78e requests the S-switch connection to the SSW 78f, the SSW 78f connects the S-switch. After that, the UPC 80c is notified of the switch channel connection.

Therefore, the UPC 80c notifies the LSL 80e of the S-switch information, and at the same time notifies the PCC 72a-2 of the S-switch information, and then sends the calling side T to the LSL 80e. A call path connection according to the connection of a switch is requested, and in response to the request, the LSL 80e requests a call path connection to the TLSI 80d so that the T-switch is connected through the TLSI 80d.

After performing the switch connection procedure in step 250 through the above-described process, the PCC 72a-2 of the ASS-W 72a that has received S-switch information from the UPC 80c receives the PCSI 72a-. The call setup assignment procedure of step 260 is performed by forwarding the call setup request message to step 1).

That is, in step 260, the PCC 72a-2 of the ASS-W 72a, which has been informed of the S-switch information from the UPC 80c as described above, calls the PCSI 72a-1 with a call setup request message. The PCSI 72a-1 transmits to the base station controller 30a through the SCCP, and the base station controller 30a responds to the call setup request message through the SCCP. When the call confirmation message is forwarded to 1), the PCSI 72a-1 forwards the call confirmation message to the PCC 72a-1.

Subsequently, when the PCC 72a-1 requests the call path to the PCSI 72a-1, the PCSI 72a-1 requests the call path to the base station controller 30a through the SCCP. In response to the request, the base station controller 30a establishes a call path and delivers a call path setting completion message to the PCSI 72a-1 through the SCCP, and the PCSI 72a-1 calls the call. The low setting completion message is transmitted to the PCC 72a-2.

Then, the PCC 72a-2 requests a call route to the PCSI 72a-1, and the PCSI 72a-1 requests a call route to the TLSI 72a-3.

On the other hand, when the base station controller 30a having established a call path notifies the PCSI 72a-1 of the incoming tone signal message via the SCCP, the PCSI 72a-1 receives the PCC 72a. -2) informs the incoming tone signal message, and the PCC 72a-2 reports the incoming tone signal to the UPC 8c, and the UPC 80c sends the incoming tone signal to the UPI 80b. report.

Subsequently, the UPI 80d notifies the SMHS 80a of the incoming call reception completion message, and the SMHS 80a sends the corresponding incoming call reception completion message (ACM message; address information necessary for call setup to the called party). The call forwarding completion message is transmitted to the other exchange 60 based on the reverse message indicating that all of the received messages has been received.

After performing the incoming setup setup procedure in step 270 through the above process, the incoming subscriber response procedure is performed in step 270. In step 270, the subscriber station 10a is 'hook-off' and the base station is performed. When the controller 30a notifies the PCSI 72a-1 of the incoming subscriber response through the SSP, the PCSI 72a-1 notifies the PCC 72a-2 of the incoming subscriber response, and thus the PCC. 72a-2 notifies the PCSI 72a-1 of the called party response recognition, and the PCSI 72a-1 notifies the base station controller 30a of the called party response recognition through the SCCP.

Subsequently, when the PCC 72a-2 notified of the incoming subscriber response notifies the UPC 80c of the ASS-T 80, the UPC 80c receives the UPI 80b. After notifying the response, the call forwarding statistics are transmitted to the MDGI 80f.

In such a state, when the UPI 80b requests an incoming response message to the SMHS 80a, the SMHS 80a sends an incoming response message (ANM message) to the foreign exchange 60. The called party answers the call. (A response message including predetermined billing information) is transmitted as a reverse message indicating that the call has been sent. From this point on, the call between the originating mobile subscriber of the foreign exchange switch 60 and the local mobile communication subscriber is normally performed.

After the incoming subscriber response processing procedure in step 270 is performed through the above process, when the cancellation message is received from the foreign exchange 60, the call cancellation procedure of step 280 is performed.

That is, in step 280, when the release message transmitted from the foreign exchange 60 is received by the SMHS 80a as described above, the SMHS 80a notifies the UPI 80b of the relay line omnidirectional disconnection. The UPI 80b notifies the UPC 80c of the trunk line omnidirectional cutting, and the UPC 80c notifies the called party of the call subscriber call release to the PCC 72a-2 of the ASS-W 72a. Then, the relay call termination statistics signal is transmitted to the MDGI 80f.

Subsequently, when the UPC 80c notifies the UPI 80b of the relay line recovery, the UPI 80b requests transmission of the relay line recovery message to the SMHS 80a, and in response to the request, the SMHS 80a. Transmits a relay line recovery message (RLC message) to the other exchange 60.

In addition, the UPC 80c requests to disconnect the call path (i.e., the S switch and the outgoing T-switch) to the UPI 80b, and the UPI 80b calls the call path to the TLSI 80d (i.e., S-switch cutting is requested to the SSW 78f of the INS 78 and the SSW 78f requests S-switch cutting to the SNC 78 at the same time. -Cut the switch.

Meanwhile, the UPC 80c notifies the relay line restoration completion message to the RCO 78g of the INS 78, and the PCSI 72a-1 of the ASS-W 72a sends the LSL 72a-4 to the LSL 72a-4. The originating switch release message is notified, and the LSL 72a-4 requests the TLSI 72a-3 to cut the call path (called T-switch).

Subsequently, when the PCC 72a-2 notifies the PCSI 72a-1 of the release message, the PCSI 72a-1 notifies the base station controller 30a of the release message via the SCCP. In response, the base station controller 30a notifies the PCSI 72a-1 of the release confirmation message via the SCCP, and the PCSI 72a-1 sends the release confirmation message to the PCC 72a-. 2) to notify.

Subsequently, when the PCC 72a-2 registers the incoming IDEL in the LCC 78a of the INS 78, the PCC 72a-1 transmits a release command message to the PCSI 72a-1. The call release command message is transmitted to the base station controller 30a through the SCCP, and the base station controller 30a releases the call to the PCSI 72a-1 via the SCCP in response to the release command message. The PCSI 72a-1 informs the PCC 72a-2 of the call release completion message.

Then, when the PCSI 72a-1 transmits a recovery request message to the base station controller 30a via the SCCP, the base station controller 30a sends a recovery completion message in response to the recovery request message. The call cancellation procedure in step 280 is terminated by transmitting to the PCSI 72a-2.

As described above, according to the incoming call processing method in the personal communication exchange system according to the embodiment of the present invention, it is possible to relay the originating signal from the PSTN fixed subscriber in another country to the destination mobile subscriber.

Claims (10)

A personal communication exchange system comprising a plurality of ASS-Ws connected to each other through a plurality of base station controllers corresponding to a plurality of mobile subscriber stations, and a personal communication switch connected to the HLRs via INS and ASS-T. A first step of occupying the incoming line at the request from the foreign exchange 60 in which the PSTN fixed subscriber is accommodated; A second step of receiving the called party transmitted from the other station exchanger 60 and transferring the called party number to the UPC 80c of the ASS-T 80; When routing information is requested from the UPC 80c and a routing information response message output from the HLR 100 is transmitted to the UPC 80c in response to the request, the UPC 80c receives the NTR of the INS 78. A third step of requesting an unblock station number translation to 78c and in response to the request, the NTR 78c notifying the UPC 80c of its own personal communication number according to the number translation result; A fourth step in which paging for the mobile subscriber is required, A fifth step of connecting each switch channel and the calling party channel in response to the request; A sixth step of establishing a call path between the originating mobile subscriber of the other country exchange 60 and the destination mobile subscriber by connecting the called party's call path; A seventh step in which the forwarding subscriber makes a call in response to the call; Personal communication characterized in that the eighth step of releasing the call by cutting the TST switch after cutting the relay line forward direction when the corresponding outgoing mobile subscriber of the foreign exchange switch (60) cuts the call; Method of handling incoming call in exchange system. 2. The method of claim 1, wherein said first step comprises the steps of: SMHS (80a) receiving an incoming start message from said foreign exchange (60), and the incoming precursor message is notified to UPI (80b) and then the UPI ( Incoming call processing method in a personal communication switching system, characterized in that the step consisting of being notified to the UPC (80c) through 80b). 2. The method of claim 1, wherein the second step includes the SMHS 80a receiving additional digits from the foreign exchange 60, and continuously receiving additional digits when the number of received digits is less than the PREFIX analysis number. On the other hand, if the received number of digits reaches the station number analysis step, requesting the station number translation to NTR (78c), in response to the request NTR (78c) performs the number translation to the local personal communication number to UPC (80c) Notifying, if the received number of digits falls below the maximum number of digits, an additional digit is received from the foreign exchange 60, while if the number of digits has reached the maximum number of digits, the process proceeds to the fourth step. An incoming call processing method in a personal communication exchange system characterized by the above-mentioned. 4. The method of claim 1, wherein the fourth step comprises the step of requesting paging of the LCC 78a to the PCC 72a-2 when the mobile paging is requested from the UPC 80c to the LCC 78a. 72a-2) performing the paging procedure and requesting the called party authentication to the HLR (100), for the called subscriber according to the authentication result from the HLR (100), to the PCC (72a-2) Incoming call processing method in a personal communication exchange system comprising the step of performing the authentication / encryption process for the incoming subscriber. The authentication / encryption process according to claim 4, wherein the authentication / encryption processing is requested according to the determination result of the authentication / unique attempt of the called party's subscriber station (10a). And, if the authentication succeeds and encryption is applied, performs an encryption procedure, and if the authentication succeeds and encryption is not applied, the incoming call processing method of the personal communication exchange system, characterized in that to perform a lake use process. The PCC 72a-2 of the called party's ASS-W 72a requests the called party's subscriber information to the LCC 78a when the authentication is successful and the procedure of not applying / encrypting encryption is completed. And the LCC (78a) notifies the PCC (72a-2) of the called party information in response to the request. 2. The method of claim 1, wherein the fifth step includes the step of requesting a switch channel connection to the LSL 80e by the UPC 80c of the ASS-T 80 and through the LSL 80e in response to the request. Causing an S-switch to be connected, notifying switch information of the S-switch to the PCC 72a-2 of the LSL 80e and the ASS-W 72, and requesting the LSL 80e. And the UPC (80c) connecting the calling T-switch. 2. The method of claim 1, wherein the sixth step includes requesting a call setup by the PCC 72a-2, and in response to the request, the base station controller 30a sends a call confirmation message to the PCC 72a-2. Notifying, establishing a call path at the request of the PCC 72a-2, notifying a called party tone signal from the base station controller 30a, and receiving the called subscriber tone signal from the UPC 80c. Requesting the incoming call reception completion message; and, in response to the request, the SMHS 80a transmits the incoming call reception completion message to the other station switch 60. Incoming call handling in. 2. The method of claim 1, wherein the seventh step is that, when the response signal from the called party is notified to the PCC 72a-2, the PCC 72a-2 sends the called party response message to the ASS-T 78. Notifying to the UPC 80c, and if the UPC 80c notifies the incoming subscriber response message to the UPI 80b, the UPI 80b requests transmission of an incoming response message to the SMHS 80a; In response to the request, the SMHS 80a transmits an incoming response message to the other exchange 60 so that a call path between the other subscriber and the subscriber of the local station is established. Method of handling incoming call in system. 2. The method of claim 1, wherein the eighth step includes transmitting a relay line omni-directional cut message to the UPC 80c when a release message is transmitted from the foreign exchange 60, and the UPC 80c transmits the ASS-W ( Notifying the calling subscriber's call release to the PCC 72a-2 of 72a; when the UPC 80c notifies the UPI 80b of the relay line recovery message, the UPI 80b sends the SMHS 80a; Requesting transmission of a relay line recovery message and transmitting a relay line recovery message from the SMHS 80a; and at the request of the UPC 80c, the LSL 80e cuts the originating T-switch and cuts the S-switch. Step, the LSL 72a-4 of the ASS-W 72 disconnects the destination T-switch in response to a request from the PCC 72a-2, and then notifies the base station controller 30a of the release message. When the release confirmation message is notified from the base station controller 30a, the PCC 72a-2 registers the IDLE status with the LCC 78a. Incoming call processing method in a personal communication exchange system comprising the step of releasing a call.