KR100487742B1 - A Common Use Number Portability Providing Method for Local Call and Mobile Call - Google Patents

Abstract

The present invention relates to a system for providing public number portability to a wired telephone and a mobile telephone in common. More specifically, a wired telephone network and a mobile telephone network are connected to an intelligent network, and a number portability database is used to transfer number portability to a wired telephone. The present invention relates to a common number portability providing system for landline and mobile phones.

The present invention provides a method for providing common number portability for landline telephones and mobile telephones in an entire communication system in which wired telephone networks and mobile telephone networks are integrated. Calls from the mobile phone to the mobile phone to the calling station, calls from the mobile phone to the landline network to the mobile phone caller, calls from the landline to the landline to the landline network, and calls from the landline to the cordless phone network to the calling station. Accordingly, the routing number stored in each number portability database is retrieved and each call is connected to the corresponding current destination station.

Description

A common use number portability provisioning method for local call and mobile call}

The present invention relates to a method for providing public number portability to a landline phone and a mobile phone in common. More specifically, a method of connecting a landline network and a mobile phone network to an intelligent network and utilizing a number portability database to transfer number portability to a landline phone. The present invention relates to a method for providing public number portability for a landline telephone and a mobile telephone that are provided to a telephone in common.

In general, number portability refers to enabling a service subscriber to change a service provider, a service location, and a service type without changing a telephone number previously used. The service provider number portability is a method in which a subscriber can continue to use an existing telephone number even if the subscriber changes his service provider.

The technology for providing carrier number portability of fixed line telephones can be largely divided into a switch based technology and an intelligent network based technology. There are two types of switch-based methods: inward routing (route routing) and rerouting (drop-back) .In the intelligent network, only queries that have been moved to the database (QoR; Query on Release) and all calls There is a method for querying the database for all calls (ACQ; All Call Query method).

When the carrier number portability is introduced to the fixed line service, the number portability service is provided by selecting a specific method that is most suitable for the domestic communication environment among the above methods. However, if a number portability service is provided between wireline telephone providers, other network operators will be affected. In other words, the calling network operator may depend on the implementation method (All Call Query) since the calling network may be a mobile telephone network instead of a wireline telephone network. It may also occur when you need to perform number portability processing. In this case, in order to provide the carrier number portability of the landline phone number, it means that the mobile phone providers must also establish a number portability database.

In addition, when the number portability is provided by the intelligent network method, since the different intelligent network protocols (INAP, CAP / WIN) are used between the wired telephone network and the mobile telephone network, the number portability database built on the wired telephone network cannot be used in the mobile telephone network. . Accordingly, in order to provide carrier number portability of a landline phone, not only a number portability database has to be established for a landline phone provider, but also a mobile phone service provider has to build a number portability database separately.

1 is a number portability providing system using a conventional All Call Query (ACQ) method. As shown in Fig. 1, in the conventional ACQ number portability providing system, before routing to all the calls of the relay network 4 or the receiving network 3 in the originating network 3 to provide number portability. A method of querying the number portability database 2 is used to obtain information such as whether the call has been ported, and if so, where it has been moved and to route using the routing information obtained from the number portability database. The above method has the advantage that the system is conceptually simple because it does not go through the relay network (4), and there is a low possibility of a dispute that can occur between operators.However, all the calls should be queried in the number portability database. It has an excessive load on the network, and to solve this problem, a large investment in the telephone network is required.

2 is a number portability providing system using a conventional query on release (QoR) method. In the QoR type portability providing system shown in FIG. 2, a call is connected to the first destination station 5 from the originating network 1 through the relay network 4 to provide number portability. If the number has been moved in 5), the call release message is returned to the relay network 4, and after receiving the message, the relay network 4 queries the number portability database 2 to obtain new routing information, and then to the obtained routing information. Along the way. However, this method has a disadvantage in that the call connection time of the numbered call and the call that is not is different from each other. In addition, once the routing is performed, the telephone network is first identified to determine whether there is port number portability. When the phone number is moved, only the signal that has been moved is sent to the calling network, and the calling network searches the number portability database again to obtain routing information. The delay of call connection is inevitable.

Furthermore, in order to simultaneously provide telephone number portability to a landline and a mobile phone by one of the above-described methods of ACQ or QoR, there is a problem in that a lot of costs or call delays become severe.

Meanwhile, US 5,887,056 (Method for routing telephone calls to subscriber of different service providers within a common numbering: March 23, 1999), in which Edward et al. Patented in the United States, has a number of local network with the same Numbering Plan Area (NPA) code. It presents a way for operators to select subscribers from multiple local network operators. The method is intended only for local telephone number portability.

In addition, US Pat. No. 5,796,330 (Security System: 1998.08.18), in which Lanesboro et al., Patented in the United States, routes calls directly from exchanges that do not have a query function for telephone number portability to an exchange with a query function. A call is handled by querying number portability database at an exchange.

In addition, US Pat. No. 5,625,681 (Method and Apparatus for telephone number portability: April 29, 1997), in which Butler et al., Patented in the United States, stores subscriber numbers and provider numbers that indicate the physical exchange location in a database, If it comes, it checks the provider number in the database for all subscriber numbers and routes it. The method checks the database for every call, which increases the load on the system and the database.

The present invention is to solve the above problems, by interworking the number portability process of the wired and wireless by using a complex method combining the ACQ and QoR method, the number portability of the landline phone and mobile phone can be made efficiently and economically The purpose of the present invention is to provide a method for providing public number portability for landline and mobile phones.

The present invention proposed to solve the problems of the conventional system as described above, in the method of providing common number portability for landline and mobile telephones in the entire communication system integrated wired telephone network and mobile telephone network, mobile telephone network or wired A first step of determining the type of call entering each calling station of the telephone network; As a result of the determination, when a call from the mobile telephone to the mobile telephone is received by the mobile telephone network calling station, the second step of retrieving the final routing number from the first number portability database in the calling station and connecting the call to the current called party corresponding to the routing number; ; As a result of the determination, when a call from the mobile telephone to the wired telephone network is received from the mobile telephone calling station, the calling station requests the connection of the call to the wired telephone network destination terminal, and when the destination terminal sends the message that the call is moved, the call is sent. A third step of the originating station retrieving the routing number of the wired telephone network current destination station from the first number portability database and connecting a call to the current destination station; As a result of the determination, when a call from the landline to the landline is received from the landline telephone network caller, the landline telephone network destination station requests the connection of the call, and after the call is connected, the landline telephone network destination terminal is transferred to the calling station. Transmitting a call to the wired telephone network by retrieving a routing number of the wired telephone network current destination station from a second number portability database in the originating station when the wired telephone network originating station transmits a message; And as a result of the determination, when a call going from a wired telephone to a wireless telephone network is received from the wired telephone network calling station, the mobile terminal is requested to connect the call to the destination terminal of the mobile telephone network. And a fifth step of retrieving a routing number of a mobile telephone network current destination station from a third number portability database within and connecting a call to the current destination station.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail the present invention.

Figure 3 is a block diagram according to an embodiment of a public number portability providing system for landline and mobile phone to which the present invention is applied. In the present invention, it is assumed that all the switches in each telephone network are connected to the intelligent network. Three routing flows are shown in FIG. That is, in the case of a call from a mobile phone to a mobile phone (hereinafter referred to as M2M), a call from a landline to a mobile phone network (hereinafter referred to as L2M), and a call from a mobile phone to a landline network (hereinafter referred to as M2M). , M2L), and a call flow from a landline to a landline (hereinafter referred to as L2L) are shown. Each call process will be described with reference to FIG.

First, in the case of M2M, when a call comes in to the originating station 1 of the mobile telephone network 100 (S1), a first switching mobile switching center (OMSC) 3 of the originating station 1 is connected to the originating station 1 once. The first number portability database (2; NPDB) is inquired (S2) after receiving the final routing number (S3), and the call is connected to the current destination station 9 of the mobile telephone network 100 (S4). This routing is handled in a similar way to ACQ. Subsequently, a third mobile switching center (GMSC) 8 of the current destination station 9 performs a normal call processing procedure to connect the calls (S5 to S9).

Next, looking at the case of L2M, the call (S11) started from the originating station 14 of the wireline telephone network 200 is a second mobile switching center (GMSC) in the destination terminal 4 of the mobile telephone network 100 (GMSC) Once connected to (6) (S12), the second switch 6 inquires the second number portability database 5 of the destination station 4 (S13) and the routing number of the current destination station 9 (S14), if the call is connected to the third exchange 8 in the destination country (9) (S15), the third exchange 8 proceeds with the normal call processing procedure and connects the call. (S16-S20).

Here, the call processing procedure and the call connection (S5 ~ S9, S16 ~ S20) is beyond the scope of the technical idea according to the present invention, the normal call processing procedure is readily applicable to those skilled in the art to which the present invention belongs. The description is omitted since it can be done.

Next, referring to the case of M2L, the call (S21) generated at the originating station 1 of the mobile telephone network 100 is the destination of the landline telephone network 200 via the first switch (3) in the originating station (1) It is connected to the station 13 (S22). When the message of the call transferred from the destination terminal 13 is sent to the first exchange 3 in the originating station 1 of the mobile telephone network 100 (S23), the first exchange 3 is the originating station 1 The first number portability database 2 existing in the network is inquired (S24), the routing number of the destination station 12 of the wireline telephone network 200 is found (S25), and the call is made to the current destination station 12. Connect.

Finally, looking at the case of L2L, the call originating from the originating station 14 of the wireline telephone network 200 is connected to the destination terminal 13 of the wireline telephone network 200 (S31) and the source of the wireline telephone network 200 When the called station 13 sends a message indicating that the number has been transferred to the calling station 14 (S32), the calling station 14 queries the third number portability database 15 existing in the wireline network 200 (S33). After determining the routing number of the current destination station 12 of the wireline telephone network 200 (S34), the call is connected to the current destination station 12 (S35).

Here, the first number portability database (2) in the originating station (1) of the mobile telephone network (100) includes the number portability information for the telephone number movement from the mobile telephone network to the mobile telephone network, and the telephone from the mobile telephone network to the wired telephone network. It stores number portability information about the movement of the number, and informs the corresponding routing number when the first switch 3 requests the routing number according to the number portability information.

Further, the second number portability database 5 in the originating station 4 of the mobile telephone network 100 and the third number portability database 15 in the originating station 14 of the wireline telephone network 200 Each stores number portability information for moving a phone number from a wired telephone network to a mobile phone network and a number portability information for moving a phone number from a wired telephone network to a wired telephone network, respectively. When the calling station 14 of the second switchboard and the wireline network 200 requests a routing number according to the number portability information, it informs the corresponding routing number.

On the other hand, a plurality of calls among M2M, M2L, L2M, and L2L described above may overlap each other and enter the calling station 1, 14 of each telephone network. In this case, each call is handled independently. For example, when a call of M2M enters the caller station 1 of the mobile telephone network 100, a call of M2L may come into the caller 1 of the mobile telephone network 100, or at the same time, the caller 14 of the wireline telephone network 200 The call may also be L2L or L2M. At this time, each call is processed independently of each other.

Hereinafter, each call processing information flow in the case of M2M, M2L, L2M, and L2L will be described in detail with reference to FIGS. 4 to 7.

4 is a flowchart illustrating call processing information in the case of M2M in the common number portability system of FIG. Referring to FIG. 4, first, when the user 300 attempts to make a call, the subscriber's terminal makes a call set-up request to the mobile telephone caller 1 (S401). More specifically, a call setup request is made to the first switchboard 3 in the mobile telephone originating station 1. Then, the mobile telephone caller station 1 requests the final routing number from the first number portability database 2 of the mobile phone caller station 1 (S402), and the first number portability database 2 of the mobile phone caller station 1 is requested. ) Sends the corresponding routing number to the mobile telephone call station 1 (S403). More specifically, it is sent to the first switchboard 3 in the mobile telephone originating station 1. As such, the mobile telephone caller 1 having received the routing number makes a call-up request to the mobile telephone current destination station 9 using the routing number (S404). The mobile telephone current destination station 9 calls the call. Acknowledgment of the setup request is performed (S405), and a call to another user 400 is connected (S406).

FIG. 5 is a call processing information flowchart in the case of L2M in the common number portability system of FIG. Referring to FIG. 5, when the subscriber 300 connected to the landline telephone calling station 14 makes a call, the subscriber's telephone makes a call set-up request to the landline telephone calling station 14 (S501). The landline telephone calling station 14 requests a call connection to the second exchanger 6 of the mobile telephone destination terminal 4 (S502), and the second exchanger 6 of the mobile telephone destination terminal 4 The second number portability database 5 existing in the mobile phone destination station 4 is requested to request a routing number of the mobile phone current destination station 9 (S503), and the second number portability database 5 In response to this, the routing number of the requested current destination station 9 is transmitted (S504). Subsequently, the second switch 6 of the mobile phone destination terminal 4 requests a call setup to the mobile phone current destination station 9 using the received routing number (S505), and the mobile phone current destination. If the station 9 approves the call setup for the request (S506), a call is connected between the landline telephone user 300 and the mobile telephone user 400 (S507).

FIG. 6 is a flowchart illustrating call processing information in the case of M2L in the common number portability system of FIG. 3. Referring to FIG. 6, when the mobile telephone user 300 calls the wired subscriber 400 using the mobile telephone, the mobile telephone terminal makes a call setup request to the mobile telephone caller 1 (S601). The call originating station 1 makes a call connection request to the wired telephone destination terminal 13 (S602). The landline telephone destination terminal 13 displays the number movement in a call release message when the telephone number to which the mobile telephone caller 1 makes a call connection request number is transmitted to the mobile telephone caller 1. Reply (S603). In this case, the first switch 3 of the mobile telephone call station 1 is returned in more detail. The mobile telephone caller station 1 requests the routing number of the destination network from the first number portability database 2 in the mobile telephone caller station 1 (S604), and the first number portability database 2 is currently present. The routing number of the destination network is transmitted (S605). Subsequently, the mobile telephone caller 1 makes a call setup request to the wired telephone call destination 12 using the received current network routing number (S606), and the call is received from the wired telephone call destination 12. If the setup is approved (S607), a call is connected between the mobile telephone caller 300 and the landline telephone receiver 400 (S608).

FIG. 7 is a flowchart of call processing information in the case of L2L in the common number portability system of FIG. As shown in FIG. 7, when the landline telephone subscriber 300 makes a call (S701), the landline telephone caller 14 requests a call connection to the destination terminal 13 of the landline telephone (S702), and the landline telephone. If the number requesting the call connection has been ported, the destination station 13 returns the number to the release message and returns to the landline telephone caller 14 (S703). The call line receiving station 14 receiving the call requests the routing number of the current destination network 12 from the third number porting database 15 of the wireline network 200 (S704), and the third number portability database 15 ) Responds to the request with the routing number of the current destination network 12 (S705). Subsequently, the landline telephone caller 14 requests a call setup to the landline telephone receiver 12 using the received current network routing number (S706), and the wireline telephone receiver 12 receives the request. If approved (S707), the call is connected between the landline caller 300 and the receiver 400 (S708).

The detailed description and drawings of the present invention disclose a preferred embodiment to help understand the present invention, and do not limit the scope of the present invention, and the scope of the present invention is determined by the above detailed description. Rather, it should be determined in the appended claims.

As described above, according to the present invention, the number portability of a landline telephone and a mobile telephone is efficiently and economically realized by using a complex method of ACQ and QoR by interworking the number portability processing of a landline telephone and a wireless telephone (mobile telephone). It can be made to improve the communication quality and to simply configure the system, in particular, there is an advantage that can provide at the same time the number portability of landline and mobile phones.

The above detailed description and contents disclosed in the drawings are not intended to limit the present invention, and it is apparent to those skilled in the art that various modifications and changes can be made without departing from the spirit of the present invention. will be.

1 is a configuration diagram of a number portability providing system using a conventional All Call Query (ACQ) method.

2 is a configuration diagram of a number portability providing system using a conventional query on release (QoR) method.

Figure 3 is a block diagram according to an embodiment of a public number portability providing system for landline and mobile phone to which the present invention is applied.

4 is a flowchart illustrating call processing information in the case of M2M in the common number portability system of FIG.

FIG. 5 is a call processing information flowchart in the case of L2M in the common number portability system of FIG.

FIG. 6 is a flowchart illustrating call processing information in the case of M2L in the common number portability system of FIG. 3.

FIG. 7 is a flowchart of call processing information in the case of L2L in the common number portability system of FIG.

 Explanation of symbols on the main parts of the drawings

1: Mobile telephone network calling station 2,5,7,15: Number portability database

3: first switch (OMSC) 4: mobile phone network destination

6: 2nd exchanger (GMSC) 8: 3rd exchanger (GMSC)

9: Current country of mobile phone network 12: Current country of landline

13: wired telephone network destination 14

Claims (7)

A method for providing public number portability for landline and mobile telephones in an entire communication system in which wired telephone networks and mobile telephone networks are integrated, A first step of determining the type of call entering each originating station of the mobile telephone network or wireline telephone network; As a result of the determination, when the call originating from the mobile telephone network to the mobile telephone network is received by the mobile telephone network calling station, the second step of retrieving the final routing number from the first number portability database in the calling station and connecting the call to the current called party corresponding to the routing number; ; As a result of the determination, when a call from the mobile telephone network to the wired telephone network is received from the mobile telephone calling station, the calling station requests the connection of the call to the wired telephone network destination terminal, and when the destination terminal sends the message that the call is moved, the call is sent. A third step of the originating station retrieving the routing number of the wired telephone network current destination station from the first number portability database and connecting a call to the current destination station; As a result of the determination, when a call from the wired telephone network to the wired telephone network is received from the wired telephone network caller, the request is made to the wired telephone network destination terminal, and after the call is connected, the call is transferred to the calling station. Transmitting a call to the wired telephone network by retrieving a routing number of the wired telephone network current destination station from a second number portability database in the originating station when the wired telephone network originating station transmits a message; And As a result of the determination, when a call going from a wired telephone network to a wireless telephone network is received from the wired telephone network calling station, the mobile terminal is requested to connect the call to the destination terminal of the mobile telephone network. And a fifth step of retrieving a routing number of a mobile telephone network current destination station from a third number portability database and connecting a call to the current destination station. The method of claim 1, wherein the first number portability database, Public number portability for landline and mobile telephones, characterized by storing number portability information for the movement of the telephone number from the mobile telephone network to the mobile telephone network and the number portability information for the movement of the telephone number from the mobile telephone network to the landline telephone network How to Provide. The method of claim 1, wherein the second and third number portability databases, Providing public number portability for landline and mobile telephones, respectively, which stores number portability information for moving the phone number from the wireline telephone network to the mobile telephone network and number portability information for moving the phone number from the wireline telephone network to the wireline telephone network. Way. The method of claim 1, wherein the first step, 4. A method for providing public number portability for landline and mobile telephones, characterized in that the four calls overlap each caller of the mobile telephone network and the wireline telephone network. The method of claim 1, wherein the third step, When the wired telephone network destination terminal receives the call connection request, when the telephone number corresponding to the call connection has been ported, displaying a number port in a call release message and responding to the mobile telephone network originating station; The mobile telephone network calling station requesting and receiving a routing number of a wired telephone network current destination station from the first number portability database; And The mobile telephone network originating station uses the received routing number to request a call establishment to a wired telephone network destination terminal and connects the call with the approval. Way. The method of claim 1, wherein the fourth step, Responding to the wired telephone network originating station by displaying a number transfer in a call release message when the telephone number corresponding to the call connection is ported when the destination terminal of the wired telephone network receives the call connection request; Requesting and receiving the routing number of the wired telephone network current destination station from the second number portability database; And The mobile telephone network originating station uses the received routing number to request a call setup to a wired telephone network current destination and connects the call with an approval. Way. The method of claim 1, wherein the fifth step is Requesting and receiving a routing number of a mobile telephone network current destination station from the third number portability database when the mobile telephone network destination terminal receives the call connection request; And The mobile telephone network destination terminal comprises the step of requesting a call setup to the mobile telephone network current destination station by using the received routing number and connecting the call with the approval. How to provide mobility.