KR100285329B1 - Method for distributing calls in mobile telecommunication system - Google Patents

Abstract

PURPOSE: A method for distributing calls in a mobile telecommunication system is provided to connect a call to an individual number in case that a general directory number is busy. CONSTITUTION: If a fixed subscriber makes a call, a fixed subscriber control part requests a VLR(Visitor Location Register) to send origination information and receives it. The fixed subscriber control part checks the line_category field of the received origination information and requests a call distribution control part to register the origination call after confirming that the fixed subscriber is a group subscriber. Then the fixed subscriber control part waits until the call distribution control part notifies whether the registration is successful.

Description

Call distribution method in mobile communication system

FIG. 1 is a block diagram of a fixed subscriber control subsystem of a mobile communication exchange for mobile call distribution of the present invention; FIG.

FIG. 2 is a flow chart of the origination processing procedure of a group subscriber for distribution of a mobile number according to the present invention; FIG.

FIG. 3 is a flow chart of an incoming call process of a group subscriber for distribution of a mobile number according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

10: fixed subscriber control unit 20: number translation unit

30: Call distribution control unit

In the digital mobile communication system, a part of fixed subscribers is designated as a group, and when a representative number is in a busy state for a call requiring an incoming call to a representative number in the group, the call is distributed so that it can be received by another individual number in the group To a call distribution method in a mobile communication system.

In general, distribution of calls refers to assigning a part of fixed subscribers as one group so as to have one representative number and one or more individual numbers, and then, when a representative number is busy, Which is not in the middle of a call.

This function is used to prevent calls from being concentrated to a specific number and is often used in offices such as public institutions and companies.

However, the call distribution function as described above is provided only in the public switched network that is used for communication between fixed subscribers, but is not provided in a digital mobile communication network that performs mobile communication between conventional mobile subscribers.

Accordingly, the present invention was conceived to implement the call distribution function in the mobile communication network as well, and its object is to provide a call distribution control unit in a fixed subscriber control subsystem of a mobile communication exchange, in cooperation with a fixed subscriber control unit and a number translation unit, So as to search for an individual number that is not in a call when the representative number is busy and to allow the call to be received by the corresponding individual number.

According to another aspect of the present invention, there is provided a call distribution method in which when a fixed or mobile subscriber attempts to originate a call to a fixed subscriber, the called party searches for a representative line or an individual line as a group subscriber, Line, occupies the line according to the state of the representative line and performs call processing. If the incoming call is an individual line or the representative line is in a busy state during a call, the line is occupied according to the state of the individual line The call processing is performed.

Hereinafter, a call distribution method in the mobile communication system of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a fixed subscriber control subsystem of a mobile communication exchange for distributing mobile calls according to the present invention. The call distribution control unit 30 operates in cooperation with each control unit for distributing a mobile phone call in a mobile communication network. A fixed subscriber control unit 10 for controlling a fixed subscriber outgoing and incoming call and operating in conjunction with the call distribution control unit 30 when originating a group subscriber and receiving a group subscriber, And a number translator 20 which operates in cooperation with the call distribution controller 30. [

The fixed subscriber control subsystem of the mobile communication exchange configured as described above is loaded into the main processor of the chopper and operates in cooperation with other call processing software blocks.

Next, a call distribution method in the mobile communication network by the functional processing blocks of the subscriber control subsystem of the mobile communication exchange will be described with reference to FIGS. 2 and 3.

FIG. 2 is a flow chart of a call origination process of a group subscriber for call distribution according to the present invention. When a fixed subscriber as a group subscriber first makes a call, a fixed subscriber control unit controlling a fixed subscriber outgoing call requests the calling information to the VLR, .

Then, the fixed subscriber control unit checks the line_category field of the origination information received. If it is determined that the subscriber is a group subscriber, it issues a call origination registration request to the call distribution control unit and waits for success or failure notification of registration.

The call distribution controller receiving the call registration request searches the database and checks whether the corresponding line is a group line having a tuple on the database.

Accordingly, if the database is searched and there is no abnormality, the call distribution controller changes the state of the line requested to be registered in the table managed locally.

After completing the change of state, the fixed subscriber controller continues the call by notifying the fixed subscriber controller of the registration success.

FIG. 3 is a flowchart of a call processing procedure of a group subscriber for call distribution according to the present invention. When a fixed or mobile subscriber tries to receive a call to a fixed subscriber, the translation controller translates the called number and determines whether the called party is a group subscriber .

If it is determined that the called party is a group subscriber in the determination process, a call registration request is made to the call distribution control unit.

The call distribution controller receiving the incoming registration request searches the database and checks whether the corresponding line is a group line having a tuple on the database.

Accordingly, the database is searched, and if there is no abnormality, it is searched whether the registration-requested line is the individual line or the representative line.

In the case of the individual line in the searching process, the call distribution controller changes the state of the line in the table managed locally to busy and requests the fixed subscriber controller to occupy the line.

Meanwhile, in the case of the representative line in the searching process, the call distribution controller checks whether the representative line state is idle or busy through a line state table managed locally.

If the status of the representative line requested to be registered is in the idle state, the line status is changed to be busy and a request to occupy the fixed subscriber control is requested. If the representative line status is busy, .

At this time, the searching process is referred to as hunting, and there are three methods.

That is, sequential hunting, which checks the status from the first line of the group every time a hunting request is made, and circular hunting and circular hunting, which check the status from the next hunting line when there is a hunting request, There is UCD Hunting, which performs hunting in a circular manner and searches for a hibernation line where hunting starts at the next hunting request.

Then, the call distribution control unit changes the state of the idle line retrieved through the hunting process from the locally managed table to be busy and requests the fixed subscriber control unit to receive an incoming call to wait for the occupancy success or failure notification from the fixed subscriber control unit.

When receiving the occupancy failure notification from the above step, the multi-hunting is performed to occupy the incoming call.

That is, in the multi-hunting, up to 40 individual lines in a group are hung up at once to request occupation of all lines by the fixed subscriber control unit.

Accordingly, the fixed subscriber control unit, which receives the occupancy request of one or more lines, sequentially attempts to occupy the first line.

If the call is successfully occupied in the multi-hunting process, the incoming call to the occupied line continues to proceed. If it fails, the next line is attempted to be occupied. If the occupation of all the multi- The call will be processed for failure.

As described above, according to the present invention, the call distribution function of the PSTN network is also implemented in the digital mobile communication network, thereby providing a variety of supplementary services such as failure guidance or number guidance by grouping fixed subscribers into several groups.

Claims (1)

A first step of determining whether a fixed subscriber control unit in a fixed subscriber control subsystem of a mobile communication exchange receives a calling information of the fixed subscriber and is a group subscriber when a calling request of a fixed subscriber is requested, A second step of requesting call distribution registration to the call distribution controller when it is determined in step 1 that the fixed subscriber requesting the call origination is a group subscriber; and a call distribution controller, which is requested to perform call registration of the second step, And a third step of processing an outgoing call by changing the state of the line requested to be registered; and a third step of processing the outgoing call of the group subscriber, wherein, when the fixed or mobile subscriber tries to receive a call to the fixed subscriber, A first step of determining whether the called party is a group subscriber through translation, A second step of requesting call distribution registration to the call distribution control unit when it is determined that the called party is a group subscriber in the first step; and a second step of requesting call distribution registration to the call distribution control unit, A third step of determining whether the line is a separate line or a representative line, and a third step of, if the line requested to be registered in the third step is a separate line, changing the line status to busy and requesting the fixed- And if the line is a representative line of the line requested to be registered in the third step, the line status is searched. If the line is in a dormant state, the line status is changed to a busy status and then the fixed subscriber control unit is requested to hold call reception. Hunting, the line in the idle state among the individual lines in the group is searched and changed to the busy state, and then the fixed subscriber control unit A sixth step of requesting the fixed subscriber control unit to occupy all the lines through multi-hunting when the occupancy failure notification is received from the fixed subscriber control unit in response to the request for occupancy of the fifth step, And a seventh step of performing call failure processing if the line occupation succeeds according to the call line occupation request of step 4 and the occupation succeeded line is processed and if the occupation fails, a call failure processing is performed. Wherein the call distribution method is a mobile communication system.