KR100284563B1 - Trunk Allocation Method for Mobile Call Processing - Google Patents

Abstract

The present invention relates to a trunk allocation method for mobile call processing. The present invention transmits usage state information of a vocoder resource to a switch at a control station, and checks the usage state of the vocoder resource with the usage state information of the vocoder resource at the exchange. The channel of the link is allocated, and the channel of the assigned link is notified to the control station so that the trunk can be quickly and efficiently set up by allocating the trunk directly at the switching exchange.

Description

Trunk Allocation Method for Mobile Call Processing

The present invention relates to a personal mobile communication system, and more particularly, to a trunk allocation method for allocating a trunk at a switch and notifying a control station.

In general, when a subscriber call is made to a Code Division Multiple Access (CDMA) system or a call is made to a CDMA system, a trunk connected between an exchange and a control station is connected to each call. ) To exchange voice data one by one. The allocation of these trunks should take into account the link-sharing load between the exchange and the control station and the vocoder resource usage of the control station.

1 is a block diagram of a trunk connection block of an exchange period with a control station of a general mobile communication system.

As shown, it is connected to the switch 5 and the plurality of trunks to exchange the call line so that the call can be made, when the call request is received, the trunk is allocated and notified to the switch 5, the exchange 5 A control station (1) comprising an exchange matching module (2) for matching with the control station (1); It consists of an exchanger 5 which is connected to the control station 1 by a plurality of trunks and comprises a control station matching module 6 for matching the control station 1 to the exchanger 5.

In the general mobile communication system as described above, a method of allocating a trunk during call processing is illustrated in FIG. 2.

A vocoder channel checking step (ST1-ST2) for checking the presence or absence of an assignable vocoder channel when a call request is received; As a result of the inspection, if there is an assignable vocoder channel, the assignable trunk notification step (ST4-ST6) of allocating the vocoder channel and informing the switch 5 of the trunk connected to the assigned vocoder channel is performed.

A trunk allocation method for call processing in a general mobile communication system made as described above is as follows.

First, a trunk connected between the control station 1 and the switch 5 will be described. The control station 1 and the switch 5 are connected by an E1 / T1 digital relay line. The E1 scheme consists of 32 channels per link, the T1 scheme consists of 24 channels per link, and each of these channels represents a trunk. The trunk connected between the control station 1 and the switch 5 and the vocoder channel of the control station 1 correspond one-to-one.

When the control station 1 receives a call request from the mobile subscriber (ST1), the control station 1 checks whether or not the vocoder channel is allocated to transmit voice data so that the call can be made (ST2). If there is no assignable vocoder channel as a result of the check, the check is performed until the assignable vocoder channel is found (ST3). If no assignable vocoder channel is found, the call request from the mobile subscriber is rejected.

If the assignable vocoder channel check is found, the assignable vocoder channel is found (ST4), and the trunk 5 connected to the assigned vocoder channel is notified to the switch 5 (ST6). Thus, the exchange 1 forms a call path to the control station 1 by the trunk notified by the control station 1, and the control station 1 forms a call path of the subscriber through the assigned vocoder channel so that the call is established. It is possible.

However, the trunk allocation method in the call processing of such a general mobile communication system forms a call rather than managing and assigning the trunk directly at the exchange by notifying the trunk assigned to the exchange by allocating trunk with the control station at the exchange period. There was a disadvantage of slowing down.

Disclosure of Invention An object of the present invention is to solve the above-mentioned conventional problems, and in particular, to provide a trunk allocation method for mobile call processing that can form a communication path quickly and efficiently by allocating a trunk directly at an exchange exchanging trunks. have.

In order to achieve the above object, the present invention (method) is,

The trunk initializes the link number to be allocated and the channel number to be allocated, and when a call request is received, the trunk that checks whether the link channel corresponding to the current link number and channel number can be allocated and the status of the vocoder channel corresponding to the link channel. State checking step; As a result of the state check of the link channel and the vocoder channel, if the channel is empty and assignable, the link channel is allocated to the trunk, the next link channel to be assigned, and a trunk allocation step of notifying the assigned trunk to the control station. It is characterized by the methodological configuration.

1 is a block diagram of a trunk connection block with a control station in a general mobile communication system;

2 is a flowchart illustrating a trunk allocation method of mobile call processing in a conventional mobile communication system;

3 is a block diagram of a control station and an exchange in a personal mobile communication system to which the present invention is applied;

4 is a flowchart showing a trunk allocation method for mobile call processing according to the present invention;

5 is a flowchart showing a trunk allocation method of FIG.

<Explanation of symbols for main parts of drawing>

10: control station 11: exchange matching module

12: Resource Status Management Module 20: Exchange

21: control station matching module 22: database management module

Hereinafter, the configuration and operation of an embodiment according to the technical spirit of the present invention ″ trunk allocation method of mobile call processing ″ described above will be described in detail with reference to the accompanying drawings.

<Example>

First, as shown in FIG. 3, the system block configuration to which the embodiment of the present invention is applied includes the switch matching module 11 for matching the switch 20 to the control station 10 and the resources of the control station 10. A control station 10 including a resource state management module 12 that manages and delivers state information of resources to the exchange 20; A switch including a control station matching module 21 for matching the control station 10 to the switch 20 and a database management module 22 for storing resource status information received from the control station 10 ( 20).

According to the trunk allocation method for mobile call processing according to the present invention, which is executed in such a personal mobile communication system, as shown in FIG. 4, the link number to be allocated and the channel number to be allocated are initialized, and when a call request is received, Checks whether the channel of the link corresponding to the channel number is empty, and if the channel of the link is already allocated and cannot be allocated, increase the link number and channel number so that the channel of the next link to be allocated is designated. A link channel state checking step (ST10-ST14) for checking a channel state; A vocoder channel checking step (ST15) of checking whether or not the vocoder channel corresponding to the assignable link channel is allocated if the link channel is empty and assignable as a result of the link channel state checking; If the vocoder channel status check result is assignable, the link number and channel number of the link channel are allocated to the trunk number, the link number and channel number are increased to designate the channel of the next link to be allocated, and the allocated trunk is notified to the control station. The trunk notification step (ST15-ST18) is made.

In the above method, the link number and the channel number are incremented so that the channel of the next link to be allocated is assigned. As shown in FIG. 5, the first channel of the first link is allocated and then the first channel of the second link is allocated. In this way, the load on the link is distributed.

Referring to the operation of the embodiment according to the present invention made as described above are as follows.

First, the resource state management module 12 in the control station 10 transmits the channel resource state information of the vocoder to the switch 20 when the state is initialized, and the switch 20 transmits this resource state information to the database management module 22. ) And initialize the link number to be allocated and the channel number to be allocated (ST10). After receiving the call request of the personal mobile communication system subscriber (ST11), the channel status of the link corresponding to the current link number and channel number is checked (ST12).

As a result of the channel state check of this link, if possible, the exchange 20 checks the channel state of the vocoder. If the exchange 20 allocates 30 channels on a link and only 10 channel resources of the vocoder connected thereto are allocated, the call fails for 20 call requests. Therefore, the switch 20 reads the vocoder resource state information corresponding to the channel of the assignable link from the database management module 22 and checks whether the vocoder channel can be allocated (ST15). As a result of this check, if the vocoder channel is assignable, the link number and channel number corresponding to the channel of the assignable link are allocated to the trunk number (ST16).

Then, the link number and the channel number are increased as shown in Fig. 5 so that the channel of the next link to be allocated is designated (ST17). That is, if the first channel of the first link is allocated, the link number and the channel number are designated so that the channel of the link to be allocated is the first channel of the second link when receiving the next call request. This allocates the load of each link to be shared.

When the trunk is allocated in this manner, the switch 20 notifies the control station 10 of the trunk (ST18). The control station 10 then assigns a vocoder channel corresponding to the assigned trunk to form a call path to the subscriber so that the call can be made. Here, since the trunk between the vocoder channel and the control station 10 and the switch 20 are connected in a one-to-one correspondence, the resource state management module 12 of the control station 10 transmits the information of the assigned vocoder channel to the switch 20. By transferring, the switch 20 refers to information of a vocoder channel necessary for trunk allocation. Thus, when the call request is received, the switch 20 receives the vocoder channel assignment information from the control station 10 and allocates the trunk with reference to the information, and notifies the control station 10 of the assigned trunk. .

As described above, the present invention &quot; trunk allocation method for mobile call processing &quot; is particularly effective in quickly and efficiently establishing a call path by allocating a trunk directly at an exchange exchanging trunks.

Claims (3)

A method of allocating trunks with a control station for a switching period, The trunk initializes the link number to be allocated and the channel number to be allocated, and when a call request is received, the trunk that checks whether the link channel corresponding to the current link number and channel number can be allocated and the status of the vocoder channel corresponding to the link channel. State checking step; As a result of the state check of the link channel and the vocoder channel, if the channel is empty and assignable, the link channel is allocated to the trunk, the next link channel to be assigned, and a trunk allocation step of notifying the assigned trunk to the control station. Trunk allocation method for mobile call processing, characterized in that. The method of claim 1, wherein the trunk state checking step, A method for allocating trunks for mobile call processing, comprising: determining whether an allocation of a link channel with a control station is possible by checking an allocation state of a vocoder channel with allocation state information of a vocoder channel received from a control station. The method of claim 1, wherein the next link channel designation method to be allocated includes: And assigning a channel belonging to the next link so that the load of the control station and the switching period link is equally distributed.

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