RU2719432C1 - Method of controlling connections in a mobile communication network with shortage of funds on the calling subscriber's account when in international roaming - Google Patents

Abstract

FIELD: wireless communication technique.

SUBSTANCE: invention relates to wireless communication. Method comprises steps of: attempting access of calling subscriber A (1) from international roaming area through switch network of roaming operator MSC-A (3) to called subscriber B (2); from switch (3) signal is sent to first – intelligent platform (5) of attempt to call subscriber B; using platform (5) checking sufficiency of means on balance of subscriber A; in case of insufficient funds from platform (5) command to disconnect is sent to switch (3); from platform (5), by means of short message transfer center (SMSC) (7), information message is sent to subscriber A through switch (3); from platform (5), sending to second platform (6) performing separate short call to called subscriber, code of occurred event and information on numbers of calling A and called B subscribers via REST / SOAP protocol; from platform (6) through switch MSC-B (4) initiate separate call to called subscriber B, receive incoming call signal from called subscriber and interrupt said separate call.

EFFECT: technical result consists in improvement of reliability and convenience of communication when using it in a zone of international roaming with a shortage of funds on the account for making outgoing calls, and in providing the user with information on the status of the account.

1 cl, 1 dwg

Description

The invention relates to the field of telephone communications, in particular to a protocol for managing calls in the telephone network with insufficient funds for calling in international roaming.

Subscribers of modern telephone networks in the absence of a credit rate or prepaid telephone connection time cannot continue to use the telephone network, in particular, call someone on the phone while in the international roaming zone.

Currently, there are well-known call control protocols due to which callers who do not have enough funds to pay for the current call can inform the called party about their attempted call.

The prior art method for managing telephone communications according to the patent of the Russian Federation No. 2341908, IPC H04M 17/00, published December 20, 2008), which consists in monitoring or controlling call attempts made by callers on the network to determine call attempts by callers having credit or airtime insufficient for making a call to the called user (intended recipient), and transmitting the called user a call (connection request), notifying the called user through his telephone about a similar attempt to call him, without having to establish a regular connection.

A disadvantage of the known solution is the low reliability of establishing telephone connections in the conditions of insufficient funds in the account of the calling subscriber, which entails the need to pay for the connection from the called subscriber.

Also known from the prior art is a method for managing connections in a mobile communication network according to the patent of the Russian Federation No. 2686640 C1 (IPC HO4W 8/00, published April 29, 2019), proposed as the closest analogue and containing the following steps:

- provide access to the aforementioned mobile communication network to a caller who does not have sufficient funds in the account;

- apply from the caller the call initiated by him to the called subscriber;

- interrupt the call initiated by the caller;

- after disconnecting initiate a separate call to the called party;

- receive an incoming call signal from the called subscriber;

- interrupt said separate call;

- the call initiated by the caller is interrupted due to disconnection performed independently by the caller,

- after delivering a signal about an incoming call, the called party is sent a message about the availability of the called party to the called party.

The disadvantage of this method is that it does not take into account the peculiarities of making connections when the subscriber is in the international roaming zone, and therefore the technical problem to be solved by the claimed invention is aimed at creating a reliable and user-friendly way of informing the called subscriber about an attempt to make a call by a caller located in the international roaming zone and not having sufficient funds to make a call, and at the same time report the call yuschemu subscriber of insufficient funds in his account, thereby creating conditions sufficient information to the caller.

The technical result achieved in solving this problem is to increase the reliability and convenience of telephone communications in case of using it by a person who is in the international roaming zone who does not have sufficient funds in the account to make outgoing calls, and ensures his awareness of the status of the account.

To achieve the stated result, a method for managing connections in a mobile communication network is proposed, comprising the following steps:

- provide an attempt to access the calling subscriber A, located in the international roaming zone, through the network switch operator-roamer MSC-A to the called subscriber B;

- from the network switch of the operator-roamer MSC-A send a signal about an attempt to call subscriber B to the first - an intelligent platform;

- using the first platform check the adequacy of funds on the balance of the caller A;

- if insufficient funds are found from the first platform, a connection disconnection command is sent to the MSC-A switch;

- after which, from the first platform through the short message center (SMSC) send an information message to the network of the operator-roamer MSC-A to subscriber A;

- from the first platform they send to the second - service platform the code of the event and information about the numbers of the calling A and called B subscribers using the REST / SOAP protocol;

- from the second platform through the switch of the called party MSC-B initiate a separate short call to the called party B;

- receive an incoming call signal from the called subscriber;

- interrupt the mentioned separate call.

When describing a method for managing connections in a mobile communication network, the term “short call” refers to a call to a subscriber who is interrupted by the call initiator immediately after receiving information that the initiated call has reached the called subscriber, while the called subscriber cannot answer the short call. By call initiator is meant a second platform.

Application in the technical implementation of the method of the first and second platforms allows to provide higher reliability of the system due to the distribution of the functionality provided by each of the platforms. This distribution improves the reliability of the entire system as a whole, reduces the number of system failures, and extends the uptime

The attached figure 1 presents the proposed scheme for implementing the method, in which the following positions are indicated:

A - caller, pos. 1;

B - called party, pos. 2;

MSC-A - Subscriber Zone A Switch, pos. 3;

MSC-B - Subscriber Zone Switch B, item 4;

the first platform is an intelligent platform, pos. 5;

the second platform is a service platform making a separate short call to the called party, pos. 6;

SMSC - short message service center (SMS center), pos. 7.

The call according to the implementation of the claimed method with reference to figure 1 is carried out sequentially as follows:

Subscriber A (1) initiates a call to subscriber B (2) through the MSC-A switch (3), while in international roaming. The mobile switch network of the MSCA operator-roamer (3) informs the first platform (5) of subscriber A (1) about an attempt to call via CAMEL protocol (IDP message in accordance with 3GPP recommendation 23.078). The first platform (5) sends a command to the MSC-A switch (3) to disconnect (CAMEL protocol, Release message in accordance with 3GPP recommendation 23.078). The first platform (5) sends an informational message via SMSC SMSC (7) to subscriber A (1) (message submit_sm protocol SMPP 3.4). SMSC (7) sends an informational message to subscriber A (1) on MSC-A (3) (MT-forward_sm message MAP protocol in accordance with 3GPP TS 29.002 recommendation). The first platform (5) informs the second platform (6) of what happened (SOAP protocol). The second platform (6) initiates a short call to subscriber B (2) (ISUP protocol of IAM message, in accordance with ITUT recommendation Q.763). After receiving a call (IAM), the subscriber unit B initiates a response message (ACM), based on which the second platform interrupts the call.

The proposed method provides the ability to conveniently and quickly connect these services, in which the subscriber is not required to remember and enter USSD commands, call service connection numbers, create, address and send SMS messages from his phone or enter a special code in front of the phone number of the called user, to send a message to the called user, etc. The provision of services is offered to him immediately at the time of attempting to make a call.

Claims (10)

A method for managing connections in a mobile communication network, comprising the following steps: - provide an attempt to access the calling subscriber A, located in the international roaming zone, through the network switch operator-roamer MSC-A to the called subscriber B; - from the network switch of the operator-roamer MSC-A send a signal about an attempt to call subscriber B to the first - an intelligent platform; - using the first platform check the adequacy of funds on the balance of the caller A; - if insufficient funds are found from the first platform, a connection disconnection command is sent to the MSC-A switch; - after that, from the first platform through the short message center (SMSC) send an information message to the network of the operator-roamer MSC-A to subscriber A; - from the first platform they send to the second - service platform the code of the event and information about the numbers of the calling A and called B subscribers using the REST / SOAP protocol; - from the second platform through the switch of the called party MSC-B initiate a separate short call to the called party B; - receive an incoming call signal from the called subscriber; - interrupt the mentioned separate short call.

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