KR100902347B1 - Providing Method of Wireless Office Telephone Service to Corporation Customer in WCDMA Network - Google Patents

Abstract

The present invention enables communication using a company's own gateway without using an expensive and extensive public telephone network (PSTN) when making a call between a WCDMA-type mobile telephone and a landline telephone. It provides a service system that supports VPN shortcuts and free calls, which make it easy to make calls between mobile phones in the premises.

The present invention provides a method for providing a wireless local telephone service to a corporate customer in a WCDMA network,

Registering all mobile telephone numbers subscribed to the wireless local area telephone service by the base station to which each enterprise network belongs and the sector number of the base station to all subscriber DBs of the WCDMA network; Registering in the enterprise subscriber DB of the enterprise gateway of each enterprise network, the premises landline telephone numbers subscribed to the wireless premises telephone service in each enterprise; Determining whether the specific mobile phone is a subscriber in the entire subscriber DB when the specific mobile phone calls a specific premises landline telephone to a specific premises telephone number; As a result of the determination, if the subscriber is a base station, reading the base station and the base station sector number corresponding to the specific mobile phone from the total subscriber DB, and checking whether the specific mobile phone exists in the premises where the specific premises wireline exists; Confirming, by the exchange of the WCDMA network, forwarding the call to a specific enterprise gateway corresponding to the specific premises wireline; Confirming, by the specific corporate gateway, whether the specific premises telephone number is subscribed to a wireless premises telephone service through an enterprise subscriber DB of the specific corporate gateway; As a result of the check, the particular enterprise gateway is characterized in that it comprises the step of connecting the call to the specific premises wireline through a private exchange.

WCDMA, Enterprise, Wireless Landline Service, Landline Phone, Mobile Communication

Description

Providing Method of Wireless Office Telephone Service to Corporation Customer in WCDMA Network

The present invention connects a mobile phone service to a corporate customer in a WCDMA based communication system and a company's existing wired infrastructure (a wired communication system such as a PBX). It relates to a service that can be conveniently used without going through.

VPN (Virtual Private Network) service provided by public mobile telephone network is limited to mobile phones only.Wireless Office System (WOS) is introduced, so the area of VPN service is not only on-site telephone terminals connected to private switching centers. Rather, it has been extended to mobile phone terminals in the WOS zone.

Therefore, in the CDMA wireless local area telephone service according to the prior art, as shown in Fig. 1, all calls between wireless telephones (abbreviated local wireless telephones) and landline telephones existing in the premises are public telephone telephone networks (Public Switch Telephone). Netwok: PSTN) and mobile switching center (MSC), etc., such solutions are expensive and must be connected by a large number of PSTN, and need to be connected to the mobile switching level, and mobile base stations must be provided together as a solution. In other words, the cost of introduction is expensive and the work involved in optimizing with the public telecommunication network for the optimization of the wireless network has occurred.

SUMMARY OF THE INVENTION In view of the problems of the prior art as described above, the present invention uses a company's own gateway without using an expensive and extensive public telephone network (PSTN) when making a call between a WCDMA-type mobile phone and a landline phone. By doing so, it provides a service system for easily supporting a call between a landline telephone in the enterprise and a mobile telephone in the campus.

In order to achieve the above technical problem, the present invention, in the WCDMA network in a method for providing a wireless local telephone service to enterprise customers,

Registering all mobile telephone numbers subscribed to the wireless local area telephone service by the base station to which each enterprise network belongs and the sector number of the base station to all subscriber DBs of the WCDMA network; Registering in the enterprise subscriber DB of the enterprise gateway of each enterprise network, the premises landline telephone numbers subscribed to the wireless premises telephone service in each enterprise; Determining whether the specific mobile phone is a subscriber in the entire subscriber DB when the specific mobile phone calls a specific premises landline telephone to a specific premises telephone number; As a result of the determination, if the subscriber is a base station, reading the base station and the base station sector number corresponding to the specific mobile phone from the total subscriber DB, and checking whether the specific mobile phone exists in the premises where the specific premises wireline exists; Confirming, by the exchange of the WCDMA network, forwarding the call to a specific enterprise gateway corresponding to the specific premises wireline; Confirming, by the specific corporate gateway, whether the specific premises telephone number is subscribed to a wireless premises telephone service through an enterprise subscriber DB of the specific corporate gateway; As a result of the check, the particular enterprise gateway is characterized in that it comprises the step of connecting the call to the specific premises wireline through a private exchange.

By using the present invention as described above, there is no need to connect to expensive and massive PSTN, there is no need to connect to the mobile communication exchange level, and there is no need to install a separate mobile communication base station for each company, so that the wireless extension phone at low cost The system can be constructed, and various additional services such as free or discounted billing for the local telephone are possible.

In addition, by using existing base stations without providing equipment such as separate base stations to corporate customers, the impact on existing communication networks is minimized, and the cost and effect of saving installation space are also reduced by shortening the introduction schedule and process. There are many side effects.

Now, the configuration and operation of the present invention will be described with reference to Figs.

The present invention is based on a WCDMA mobile communication network, as shown in FIG. 2, in which a switch (MSC), a service controller (SCP), a control station (RNC), and a base station (Node-B) exist.

In addition, corporate gateways include corporate gateways (CGWs), private branch exchanges (PBXs), and landline (T) telephones. Here, CGW plays a role of linking corporate wired network and WCDMA network. Here, as shown in Figure 2, the MSC is interlocked using the SS7 signal system, the physical connection is connected via E1.

Next, a description will be made of a method of communication between the mobile phone in the premises and the landline telephone in the premises.

First, in the MSC or the service controller of the WCDMA network, the general telephone number of the mobile telephone subscribed to the corresponding wireless local area telephone service (WOS) for each base station and sector of the base station to which the corporate network belongs is shown in FIG. It is also registered in the entire subscriber DB (DB-T).

Then, when the switching center (MSC) or the service controller (SCP) receives the mobile phone number, the base station number and the base station sector number, it can be known which mobile phone is subscribed to the wireless local area telephone service of the enterprise.

In addition, in the corporate gateway (CGW) of each corporate network, as shown in Fig. 6, the wired telephone number and the corresponding extension telephone number are registered in the corporate subscriber DB (DB-C) in the corresponding corporate gateway (CGW). Of course, if there are multiple private exchanges (PBXs) in a company, each private exchange number is also registered.

For example, the mobile phone (MS-A) has an extension number of # 5678 and a general phone number of 010-9709-3106, the fixed line telephone (T) has an extension of # 3456 and a general telephone number is 031-. Suppose that 765-5636 and Firm A exist in Base Station # 2 and Sector # 3.

Now, mobile phone (MS-A) [premises telephone number: # 5678, general telephone number: 010-9709-3106] is a landline telephone (T) [premises telephone number: # 3456, general telephone number: 031-765- 5636] by calling the extension number # 3456 (S101), the base station number and sector number in which the mobile phone exists are the general telephone number [010-9709-3106] together with the switch (MSC) or service controller of the WCDMA network. (S102).

Now, the exchange (MSC) or the service controller (SCP) determines whether the mobile phone of this general telephone number [010-9709-3106] is a telephone number subscribed to the WOS service through the entire subscriber DB (DB-T). If the subscriber is a subscriber, the mobile telephone compares the base station number # 2 and the sector number # 3 and the received base station number and sector number in the entire subscriber DB (DB-T) (S103).

If the WOS subscriber and the comparison result are the same, since MS-A is a mobile phone of Company A's WOS service and is present in the company, the MSC is the destination number of the company gateway CGW-A. Request connection by passing (# 3456) (S104). The charge is free or discounted.

If the subscriber is not a WOS subscriber or if the comparison result is not the same (that is, it does not exist in the company A ward), the announcement to switch to the pay call is transmitted to the mobile phone (MS-A) to induce the caller to decide whether or not to call (S105). .

When the gateway (CGW-A) receives the connection request from the exchange (MSC), it checks whether the called party number [# 3456] exists in the enterprise subscriber DB (DB-CA) (S106). -A) returns an error to the WCDMA network and releases the corresponding call (S107), and if present, the enterprise gateway (CGW-A) is connected to the private exchange (PBX) (PBX) ( In FIG. 6, # 2) is selected to make a call with the landline telephone corresponding to the called number [# 3456] (S108).

Next, the mobile phone (MS-A) [company telephone number: # 5678, general telephone] in the company A premises landline telephone (T) [premises telephone number: # 3456, general telephone number: 031-765-5636] Number: 010-9709-3106] by calling the extension telephone number [# 5678] (S201), the private exchange (PBX) requests the call to the corporate gateway (CGW-A) (S202).

The enterprise gateway (CGW-A) receiving the call establishment request retrieves the called number [# 5678] from the enterprise subscriber DB (DB-C-A) (S203).

If the search result does not exist, the call is released with the announcement (S204), and if present, the enterprise gateway (CGW-A) is the general telephone number corresponding to the local telephone number [# 5678] [010-9709-3106]. ] Is read by the entrepreneur DB (DB-CA) and transferred to the switch (MSC) or service controller (SCP) of the WCDMA network (S205).

Now, the exchange MSC or the service controller SCP checks whether the WOS subscriber is registered through the telephone number [010-9709-3106] of the mobile phone MS-A in the entire subscriber DB DB-T (S206). .

If it is confirmed that the subscriber is a subscriber, DB-T checks whether the MS-A is a subscriber of the company (company A in FIG. 5) and the base station number (# 2) of the company. The sector number # 3 is checked (S207).

If it is confirmed that the subscriber is not a subscriber to the announcement to switch to the pay call to the wired telephone (S208).

It is checked whether the mobile telephone MS-A exists in the base station number # 2 and the sector number # 3 of the company identified in step S207 (S209). If it exists, the exchange MSC determines the mobile telephone ( MS-A) is connected to the general telephone number [010-9709-3106] to make a call (S210), if not present, go to step (S208) and transmit a guide broadcast to switch to a pay call to the local fixed line telephone. In FIG. 2, the mobile phone MS-A is shown as being in enterprise A. As shown in FIG.

On the other hand, in the above description, the MSC transfers the internal telephone number to the corporate gateway (CGW). However, as shown in FIG. 6, the WOS subscriber's general telephone number and the internal telephone number are previously entered into the enterprise subscriber DB (DB). -C) and the exchange (MSC) delivers the general phone number to the corporate gateway (CGW), and the enterprise gateway (CGW) searches the premises telephone number corresponding to the general telephone number in the entrepreneur DB (DB-C) It is also possible to have the private exchange forward this telephone number.

Although the preferred embodiments of the present invention have been described above, it should be noted that the present invention is not limited to these embodiments, but various modifications can be made without departing from the spirit of the present invention.

1 illustrates a wireless local telephone service according to the prior art.

Figure 2 illustrates a wireless local telephone service according to the present invention.

3 is a flowchart illustrating a case where a mobile telephone calls a landline telephone according to the present invention.

4 is a flowchart illustrating a case where a landline telephone calls a mobile telephone according to the present invention.

Figure 5 shows the structure of the entire subscriber DB in accordance with the present invention.

Figure 6 illustrates the structure of a corporate subscriber DB according to the present invention.

Claims (6)

In the method of providing wireless extension telephone service to corporate customers in WCDMA network, Registering all mobile telephone numbers subscribed to the wireless local area telephone service by the base station to which each enterprise network belongs and the sector number of the base station to all subscriber DBs of the WCDMA network; Registering in the enterprise subscriber DB of the enterprise gateway of each enterprise network, the premises landline telephone numbers subscribed to the wireless premises telephone service in each enterprise; When a specific mobile telephone calls a specific premises landline telephone to a specific premises telephone number, determining whether the specific mobile telephone is a subscriber of a WCDMA network in the entire subscriber database; As a result of the determination, if the subscriber of the WCDMA network reads the base station and the base station sector number corresponding to the specific mobile telephone from the total subscriber DB, and confirms whether the specific mobile telephone exists in the premises where the specific local fixed telephone exists. ; Confirming, by the exchange of the WCDMA network, forwarding the call to a specific enterprise gateway corresponding to the specific premises wireline; Confirming, by the specific corporate gateway, whether the specific premises telephone number is subscribed to a wireless premises telephone service through an enterprise subscriber DB of the specific corporate gateway; And confirming that the particular enterprise gateway, if subscribed, connects the call to the specific premises landline telephone through a private exchange. In the method of providing wireless extension telephone service to corporate customers in WCDMA network, Registering a base station to which each enterprise network belongs and all mobile phone numbers subscribed to the wireless local area telephone service by the sector number of the base station to the WCDMA network and registering them in the entire subscriber DB; Registering in the corporate subscriber DB of the corporate gateway of each corporate network the premises landline telephone numbers subscribed to the wireless premises telephone service and the mobile telephone numbers corresponding to the premises wireline telephone numbers in each enterprise; Requesting a call establishment from a specific enterprise gateway corresponding to a private exchange corresponding to the specific premises landline when the specific premises landline calls a specific mobile telephone to a specific premises telephone number; Searching, by the specific enterprise gateway, whether the specific extension telephone number exists in a specific entrepreneur DB of the specific enterprise gateway; If the search result is present, the specific enterprise gateway reads out a specific mobile telephone number corresponding to the specific premises telephone number from the specific corporate subscriber DB and delivers it to the WCDMA network; Confirming, by the WCDMA network, whether the specific mobile telephone number is a subscriber of a WCDMA network in all subscriber DBs; As a result of the check, if the subscriber of the WCDMA network, the WCDMA network checks the base station number and the sector number corresponding to the specific mobile phone in the entire subscriber DB to determine whether the specific mobile phone exists in the premises where the specific landline telephone exists. ; Verifying that the WCDMA network switches the call to the specific mobile phone if it is determined to exist. 3. The method of claim 1 or 2, wherein the entire subscriber DB is present in a service controller of a WCDMA network. 3. The method of claim 1 or 2, wherein the entire subscriber DB is present at a switchboard of a WCDMA network. 2. The wireless premises of an enterprise customer in a WCDMA network according to claim 1, wherein the exchange of the WCDMA network forwards the call to a specific enterprise gateway corresponding to the particular premises wireline telephone. How to provide phone service. 2. The corporate subscriber DB further stores a mobile telephone number corresponding to the local fixed telephone number, wherein the switch of the WCDMA network forwards the call to a specific corporate gateway corresponding to the specific local fixed telephone. This is done by delivering a mobile phone number, and the specific enterprise gateway detects the wired telephone number of the premises in the corporate subscriber DB based on the mobile telephone number. How to give.

Images