KR100258122B1 - Centrex service apparatus and method in a personal communication service exchange system - Google Patents

Abstract

PURPOSE: A centrix service device and a centrix service method in a mobile communication exchange system are provided to extend a usage area of a terminal, and to solve a cut-off of a call by a hand-over by performing a virtual private service with an only exchange function. CONSTITUTION: A centrix service device includes a call processing part(132), a centrix number translation part(134) and a home location register matching part(136). The call processing part(132) maintains a call in the time of a movement of a subscriber. The centrix number translation part(134) searches information according to the translation of a subscriber number through a home location register device(140) on the occasion of the call of a centrix subscriber, and connects a pertinent in-coming subscriber and a pertinent out-going subscriber according to a search result. The home location register matching part(136) performs a matching operation between the home location register device(140) and a mobile communication exchange(130), and transmits and receives a signal through an internal matching signal method or a common line signal method in the time of a signal transmission to the home location register device(140).

Description

Centrix service apparatus and method in mobile communication switching system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for centric services in a mobile communication switching system. More particularly, the present invention relates to a wireless private exchange using a virtual private exchange function in a wireless local exchange (PCS (Personal Communication Service exchange, cellular switch, etc.). CENTRY SERVICE APPARATUS AND METHOD FOR MOBILE COMMUNICATION EXCHANGE SYSTEM

In the related art, the wireless private exchange cannot be used when the radius of the cell is small and the cell range is out of range. Therefore, the terminal cannot control the mobility, which is an advantage of wireless, so that the terminal controls the allocated cell. If it goes out of scope, it becomes useless, and there is a flaw in the implementation of the Centrix function because the wireless local exchange does not have the number translation function of the private wireless subscriber number set to the Centrix.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, wherein the wireless local exchange does not have a Centrix function, and the wireless private exchange does not support handover between the private network and the private network and does not support the size of the cell. Is very small, so it is not possible to utilize mobility, which is an advantage of wireless, and thus, a centric service device in a mobile communication switching system implementing a virtual private exchange function supporting mobility and handover by applying a wired centric function to a wireless local exchange and The purpose is to provide a method.

In order to achieve the above object, the present invention provides a call processing unit that manages the mobile subscriber to smoothly move the mobile subscriber while moving to another system, and the call processing unit judges that the call is the center of the subscriber. Stores the subscriber number and location information for all registered terminals, the Centrix number translation unit for retrieving the information according to the subscriber's number translation through the registrar, and connecting the called party to the calling party according to the search result. It is responsible for matching between the home location register, which is a database management system, and the mobile communication exchange, and is a home location register matching unit that allows signals to be exchanged through the internal matching signal or common line signaling method when transmitting signals to the home location register. Mobile communications, including In the switching system, the calling subscriber in the same centric group is requested to enter the called subscriber's call by entering the called subscriber's number to the mobile switching center to which the calling subscriber belongs, and the calling subscriber is registered in the corresponding mobile switching center. In the first judging step of judging whether or not the subscriber is a lix service, and if the calling subscriber's number determined in the first judging step is a subscriber registered in the Centrix service in the mobile communication switching system, the call processor determines the number of the entered number. In the second judging step of determining whether the received number is a request to connect to a Centrix subscriber, and if it is determined that the received number is not a Centrix subscriber call request determined in the second judging step, it is determined whether it is a national subscriber call request. In the third judgment step and the third judgment step, If it is determined to be, delete the prefix number indicating that it is a national subscriber call, and process the process as in the prior art with the deleted number, and if the call between the Centrix subscriber extension as determined in the second determination step, move Transmitting a caller information including the subscriber's subscriber number and the calling party's number to the Centrix number translator in the communication exchange and requesting the translating of the numbers of the Centrix extension subscribers; Translating the number of the called subscriber with the number and adding the station number of the calling subscriber to the number translated number to notify the call processor of the number translation result to open the call path between the subscribers so that the call is connected. In the mobile communication switching system characterized in that It provides cents Riggs service devices and methods.

1 is a block diagram of a mobile communication switching system suitable for a Centrix service according to the present invention;

2 is a flowchart illustrating a step of performing a centric service in a mobile communication switching system according to the present invention;

<Description of the code | symbol about the principal part of drawing>

110, ...: base station 120, ...: base station controller

130, ...: mobile communication switch 132: call processing unit

134: Centrix number translation unit 136: home location register matching unit

140: home location register

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings.

Referring to the configuration according to the present invention, a plurality of mobile communication exchanges (130, ...), which provides an exchange function between mobile communication subscribers, and also provides an exchange function between mobile subscribers and between mobile subscribers and fixed subscribers, It is connected to the communication exchanger 130, ... by wire, and the mobile communication exchanger 130, ... is connected to the internal interface of the switch or the NO.7 link, and it can be connected with the base station, inter-cell handoff processing, call control, A plurality of base station controllers 120, ... that perform functions, and are connected to the base station controllers 120, ... to transmit and receive radio signals, system synchronization, radio channel encoding and decoding, signal strength and quality measurement, and A plurality of base stations (110, 112, ..., 114) that have band signal processing, diversity, radio resource management, and self-maintenance functions and which are wirelessly matched to a plurality of personal communication terminals, and subscribers to all registered terminals. Farai And a home location register 140, which is a database management system that stores and manages data and location information. The configuration of the plurality of personal mobile communication exchanges 130, ... Call processing unit 132 that manages to smoothly move while maintaining the call without interruption when moving, and when the call processing unit 132 determines that the call is a call of a Centrix subscriber, the subscriber's number is translated through the home location register 140. Search information according to the search results and the connection between the recipient subscriber and the calling subscriber according to the search results of the Centrix number translation unit 134, between the home location register 140 and the mobile communication exchange (130, ...) It is in charge of matching and can send and receive signals through the switch internal matching signal or common line signaling method (NO.7, etc.) when the signal is transmitted to the home location register 140. It is configured to include a Home Location Register matching unit 136 to the lock.

Referring to Figure 1 in detail with respect to the block diagram of a mobile communication switching system suitable for centric services, a plurality of mobile communication exchange (130, ...) provides a function for switching between personal communication subscribers It provides an exchange function not only for mobile subscribers but also for fixed subscribers, and has an information exchange function between the home location registers 140.

It also has a matching function with a plurality of base station controllers 120, ... for transmitting and receiving signals and voice data with the terminal.

One base station controller 120 is matched with a plurality of base stations 110, 112, ... 114, wireless signal transmission and reception of the base station, system synchronization, wireless channel encoding and decoding, signal strength and quality measurement, baseband signal A device having functions of processing, diversity, radio resource management, and self-maintenance, and performing functions such as inter-cell handoff processing and call control, and having a switch with a corresponding mobile communication exchange 130 to which the base station controller 120 is connected. Connect using the internal matching method or the common line signal method.

In addition, the base station controller 120 controls each base station (110, 112, ..., 114) to wirelessly receive a signal from each base station (110, 112, ..., 114), the signal processing process The control is connected to the corresponding mobile communication exchange 130 to which the base station controller 120 belongs.

A plurality of base stations (110, 112, ..., 114) are connected to the base station controller 120 of the upper level to transmit and receive radio signals, system synchronization, radio channel encoding and decoding, signal strength and quality measurement, baseband signal processing, Diversity, radio resource management and self-maintenance functions, and wireless matching with multiple personal communication terminals.

The mobile communication exchange 130 controls the call of the wireless terminal subscribers and connects them, and is connected to a plurality of base station controllers 120, ..., and passes through a plurality of base stations 120, ... The signals from the base station controller (120, ...) of the other switch and the local call is switched to connect and perform the process, such as charging.

The call processing unit 132 in the mobile communication switch 130, ... connects and disconnects the mobile call to a block for processing a call, and maintains the movement while the mobile subscriber is handed off to another system of the mobile communication switch while maintaining the call without disconnection. Do it well.

The centrix number translation unit 134 in the mobile communication exchange 130 translates the number and transmits the result to the call processing unit 132 so that the call processing unit 132 transmits the information according to the subscriber's number translation through the home location register 140. Search for and allow the connection between the called party and the calling party according to the search result.

The home location register matching unit 136 in the mobile communication exchange 130, ... is responsible for matching between the home location register 140 and the mobile communication exchange 130, ... It communicates with the location register 140, and serves to convert the internal signal of the mobile communication switch (130, ...) to the common line signal type so that a signal is transmitted through the home location register (140).

The home location register 140 is connected to a plurality of mobile communication exchanges 130, ... to store subscriber parameters and location information for all terminals registered in the plurality of mobile communication exchanges 130, ... Means a database management system to manage.

Referring to FIG. 2, the steps of the service of the centrix in the mobile communication switching system are described. The call subscriber is inputted by entering the number of the called subscriber to the mobile communication exchange 130 to which the calling subscriber in the same centric group currently belongs. (Step 202).

The call processing unit 132 determines whether the calling subscriber is a Centrix service subscriber registered in the mobile communication exchange 130 (step 204).

If it is determined in step 204 that the calling subscriber's number is not a subscriber registered in the Centrix service of the mobile communication exchange, an error message is sent to the calling subscriber to recognize that the Centrix service is impossible (step 214). ).

If it is determined in step 204 that the calling party's number is a subscriber registered in the Centrix service in the corresponding mobile communication switching system, the call processing unit 132 has the number of the entered number and the called number is the Centrix subscriber call request. It is determined that the authorization (step 206).

The reason for judging whether the call is a request for a CENTRYX / domestic subscriber is based on a request for a call to a local subscriber (for example, 9, 690-5700) including a prefix number. In the case of a RIX subscriber call request, if the entered number is a station number and a number without a prefix (for example, 5700), it is determined as a Centrix subscriber call request.

Referring to FIG. 2B, if it is determined in step 206 that the received number is not a CENTRYS subscriber call request, it is determined whether it is a national subscriber call request (step 208).

If it is determined in step 208 that it is not a local subscriber call request, the corresponding supplementary service or error message inputted is sent to the calling subscriber to inform the calling subscriber that the Centrix service is impossible (step 218).

If it is determined in step 208 that it is a national subscriber call request, the prefix number indicating the national subscriber call is deleted (step 210).

The call processing unit 132 transmits the deleted number to the number translation unit (not shown) as it was processed in the prior art and receives the number translation result from the number translation unit (step 212).

Then, the process proceeds to "B" in FIG. 2A.

If the incoming number determined in step 206 of FIG. 2A is a call between CENTRID subscriber extensions, the CENTRY number translation unit 134 in the mobile communication exchange 130 includes the subscriber number of the called party and the calling party number. Requesting translation of the number of the Centrix extension subscribers by transmitting the calling information (step 214).

For example, the reason for determining whether the entered number is a Centrix subscriber is based on the case where the number of digits entered is a number other than the station number, or when a specific prefix number is not entered, the incoming number is a request for a Centrix subscriber call. To judge.

The centrix number translation unit 134 translates the number of the called subscriber with the received outgoing information to determine whether the subscriber is registered in the Centrix subscriber database registered in the centrix number translation unit 134 (step 216).

If it is determined in step 216 that the called subscriber is not a subscriber registered in the Centrix subscriber database, an error message is sent to the calling subscriber to inform the calling subscriber that the Centrix service is impossible (step 220).

If it is determined in step 216 whether the subscriber is registered in the Centrix subscriber database and is a registered subscriber, it is determined whether the called party and the calling party have the same station number, that is, the subscriber of the same Centrix group (step 218).

If it is determined in step 218 that the called party and the calling party are not subscribers of the same CENTRIC group, the call processing unit 132 is notified that an error has occurred, and an error message is sent to the calling subscriber, thereby preventing the CENTRIX service. Is acknowledged to the calling subscriber (step 220).

If it is determined in step 218 that the called party and the calling party are members of the same CENTRYS group, the representative number is added to the CENTRYX subscriber number to notify the call processor 132 of the number translation result (step 222). ).

When the call processing unit 132 receives the authentication result from the home location register 140 with the received number and is notified of the authentication result, the call processing unit 132 opens a call path between the subscribers so that the call is connected (step 224).

The embodiment of the above-described step will be described by way of example, where the Centrix registration is made in the mobile communication exchange 130, the calling party is in the area controlled by the first base station 112, and the called party is the second base station. Assume that 114 is in the controlling area. In addition, it is assumed that the Centrix extension number of the called subscriber is "5700".

When the subscriber of the Centrix group whose representative number is 252 dials "5700", the mobile communication exchange 130 which has received outgoing information notifies the home location registrar 140 of the calling party's information and the called number "5700". do.

Then, the home location register 140 receives only four digits, and therefore, in the information database of the calling subscriber found by searching, the caller is a member of the Centrix group, and 1 or 9 (in the case of an external code, 9+ the corresponding external number). Since the same special code is not entered at the first digit, the representative number is added and the base station 110, 112, ..., 114 with the corresponding subscriber is found and the call is connected with the subscriber "252-5700".

As another example, referring to an example in which an extension CENTRENCE subscriber calls a domestic subscriber and connects a call, the registration of the calling subscriber is made in the mobile communication exchange 130, and the prefix number calling the domestic subscriber is “9”. The calling subscriber is a Centrix subscriber in the area controlled by the first base station 112, and the number of the local subscriber is assumed to be "252-5700".

When the called subscriber dials "9,252-5700", the mobile communication exchange 130 to which the calling subscriber which received the calling information belongs first recognizes the "9" entered first and recognizes it as a national subscriber call, and the caller's information and 9 Except for the called "252-5700" is called the home location register 140.

The home location register 140 then recognizes that the caller is a subscriber of the Centrix group in the information database of the calling subscriber found by searching.

Then, the representative number is added, and the exchange or mobile communication exchange with the corresponding subscriber is found and the call is connected with the calling subscriber and the called subscriber "252-5700".

In another embodiment, when the private subscriber is outside the area controlled by the exchange where the corresponding Centrix is registered, and when calling a subscriber of the Centrix extension or the local station, input all numbers of the called party including the station number. Then, the receiving party inputs the number of the called subscriber as in the conventional terminal in the same manner as the conventional technology, and the exchange processes the called subscriber and the called subscriber by opening the call passage between the calling subscriber and the called subscriber.

The principles of the invention have been described above in connection with specific devices, which are described by way of example only, and are not limited to the spirit of the invention as described in the appended claims.

As described above, the present invention can perform virtual private service only by the function of the exchange without changing the home location register 140, so that it can be used in the premises and other areas with one terminal, and a hand generated in the case of wireless private This solves the problem of disconnection due to over.

Claims (2)

A call processing unit 132 that manages the mobile subscriber to smoothly move the mobile subscriber while moving to another system without losing the call; If the call processing unit 132 determines that the call is a Centrix subscriber, the home location register 140 searches for information based on the translation of the subscriber's number and connects the called party to the calling party according to the search result. The Centrix number translation unit 134, It is responsible for registration between the home location register 140 and the mobile communication switch 130, ... which is a database management system for storing and managing subscriber parameters and location information for all registered terminals, and the home location register 140 And a home location register matching unit (136) for transmitting and receiving signals in a switch internal matching signal or a common line signal method when transmitting a signal. When the mobile subscriber moves to another system, the call processing unit 132 manages to keep the call smoothly while maintaining the call, and the call processing unit 132 determines that the call is the call of the centric subscriber. CENTRY number translation unit 134 for retrieving the information according to the subscriber's number translation and connecting between the called party and the calling party according to the search result, and subscriber parameter and location information for all registered terminals It is responsible for the matching between the home location register 140 and the mobile communication exchange 130, ... which is a database management system for storing and managing the data. A mobile communication bridge comprising a home location register matching unit 136 for transmitting and receiving signals in a line signal manner. In the ring system, Requesting the called party's call connection by inputting the called party's number to the mobile switching center 130 to which the calling subscriber in the same centric group currently belongs; A first judging step of judging whether an originating subscriber is a Centrix service subscriber registered in the mobile communication switch (130, ...); If the number of the calling subscriber is determined to be the subscriber registered in the Centrix service in the corresponding mobile communication switching system, the call processing unit 132 receives the number of the input number and the incoming number is the cent. A second judging step of judging whether the request is for a Rx subscriber call connection; A third judging step of judging whether or not the called number is not a Centrix subscriber call request, determined in the second judging step, if it is a national subscriber call request; If it is determined in the third determination step that it is determined to be a local subscriber call request, deleting the prefix number informing of the national subscriber call, and processing the same as the conventional method with the deleted number; In the case of a call between Centrix subscriber stations determined in the second determination step, the subscriber number of the called party and the calling party number of the called subscriber to the CENTRY number translation unit 134 in the mobile communication switch 130. Requesting a number translation of a Centrix extension subscriber by transmitting outgoing information, including; The centrix number translation unit 134 translates the number of the called subscriber with the received outgoing information, adds the station number of the calling subscriber to the number translated number, and adds the number translation result to the call processor 132. And notifying and opening a call path between the subscribers so that the call is connected.

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