KR100432978B1 - Device and Method of Controlling Cell in Destination About Point-to Multi Point - Google Patents

Abstract

The present invention relates to a cell control apparatus and method for a broadcast channel, and more particularly, to a broadcast channel for controlling transmission / reception of a broadcast cell by a function of activating or deactivating connection information at a transmitter for a broadcast channel capable of transmitting broadcast cells. The present invention relates to a cell control apparatus and method.

The cell control apparatus for a broadcast channel according to an embodiment of the present invention transmits a cell to a destination by copying a cell according to the number of subscribers to an input end of a switch in an exchange directly connected to a receiving end that determines whether to transmit a cell to all channels. A multicasting control unit; And a transmitter configured to determine whether to transmit the broadcast cell transmitted from the multicasting control unit to specific sub subscribers.

Description

Device and method for controlling cell for broadcast channel {Device and Method of Controlling Cell in Destination About Point-to Multi Point}

The present invention relates to a cell control apparatus and method for a broadcast channel, and more particularly, to a broadcast channel for controlling transmission / reception of a broadcast cell by a function of activating or deactivating connection information at a transmitter for a broadcast channel capable of transmitting broadcast cells. The present invention relates to a cell control apparatus and method.

In general, the control function for the multicasting channel (point-to-multi-point channel) implemented in the HANbit ACE 64 and HANbit ACE 256 ATM exchanges already installed in the existing national network Asynchronous Transfer Mode (ATM) exchange is By directly controlling the channel at the receiver, all transmitters connected to the receiver are uniformly controlled.

As shown in FIG. 1, a general broadcast channel (Point-to-Multi-Point channel) is configured. The broadcast channel is referred to as a root and has a receiver 1 on the source side. It consists of the lower channels that can be received, i.e. the channels of the transmitter 4, called the leaf.

In the conventional method, it is possible to control ATM cells transmitted through a broadcast channel only at a receiving end. When the network operator makes a request for inactivation of the channel of the receiver, the transmitter 4 that is supposed to receive the cell from the receiver 1 cannot uniformly receive the corresponding broadcast cell.

That is, conventionally, it is not possible to selectively provide subscribers with control over broadcasting cells, and there is a problem in that all processing must be uniform.

If you do not want to provide the service to specific subscribers, you could not select and control. To control it, you had to delete the channel set as one leaf in the transmitter (4), If you want to support, you have to set the channel again. For example, if the sub-subscribers below the transmitter 4 do not want to support the service for receiving the broadcast cell, the broadcast channel set in the transmitter 4 should be deleted. If you want to support the service later, there is a problem that you need to register the channel again. In this case, the band management, which is managed by the network operator, should be taken into account when registering the channel. In addition, it is cumbersome such as checking the state of the switch.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned general problems, and an object thereof is to control transmission / reception of a broadcast cell with a function of activating or deactivating connection information at a transmitter for a broadcast channel capable of transmitting broadcast cells.

1 is a diagram showing a conventional broadcast channel configuration.

2 illustrates a cell control apparatus for a broadcasting channel according to the present invention.

FIG. 3 is a diagram showing a connection information table for controlling a cell at a transmitter for a broadcast channel in FIG.

4 is a flowchart illustrating a cell control method for a broadcast channel according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: receiver

20: multicasting control unit

30: switch

40: transmitting end

41: connection information table

The cell control apparatus for a broadcasting channel according to an embodiment of the present invention for achieving the above object is adapted to the number of subscribers to the input end of the switch in the switch directly connected to the receiving end to determine whether to transmit the cell to all channels A multicasting control unit for copying the cell and transmitting the cell to a destination; And a transmitter configured to determine whether to transmit the broadcast cell transmitted from the multicasting control unit to specific sub subscribers.

In addition, a cell control method for a broadcast channel according to an embodiment of the present invention for achieving the above object comprises the steps of receiving a broadcast cell transmission prohibition request from the operator to a specific transmitter; Setting an inactive flag on a channel of the specific transmitter; And stopping the cell transmission for broadcasting to sub-subscribers below the specific transmitter.

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

As shown in FIG. 2, a cell control apparatus for a broadcasting channel according to an exemplary embodiment of the present invention includes a receiver 10 determining whether to transmit a cell to all channels, and a switch directly connected to the receiver 10. A multicasting control unit 20 for copying a cell to the number of transmitting terminals 40 to the input terminal side of the terminal 30 and transmitting the cell to the transmitting terminal 40, a switch 30 for processing a switching function in the exchanger, The transmitter 30 is connected to the switch 30 and includes a transmitter 40 including a connection information table for determining whether to transmit a cell to sub subscribers of the transmitter 40 or less.

The receiving end 10 includes a source, which is a source of transmission when a cell received from an optical transmission medium or a power station is copied in a system and the cell is transmitted to a lower end thereof.

The transmitter 40 is a point-to-multi point connection that is intended to be exported from the exchange to the output at the time of establishing the broadcast channel.

The transmitter 40 includes a connection information table 41 as shown in FIG. 3 to control transmission / reception of a broadcast cell with a function of enabling or disabling a connection at the transmitter for a broadcast channel. The active bit of 41) manages processing of a cell inputted through a corresponding connection in a register that manages information about the connection.

For example, bit 1 represents the active bit and bit 0 represents the inactive bit.

The present invention additionally adds a function that can prohibit the service of a broadcast cell to all channels uniformly to the function that previously controlled a broadcast channel.

When the network operator wants to prohibit transmission / reception of a broadcast cell by all connection information registered as one broadcast channel, the reception end may prohibit transmission of a broadcast cell by the conventional technique. In this case, all of the transmitters 40 connected to the receiver 10 cannot receive all of the cells at once.

However, in the present invention, all other transmitters 40 allow cell reception while making requests to prohibit reception of broadcast cells only to lower sub-subscribers of transmitter 2.

If the network operator requests that the service be inhibited, that is, deactivated, on the connection channel of the transmitting end 2, the inactive flag is set by setting the bit in the connection information table 41 to 0 as shown in FIG. Then, the broadcast cells coming into the broadcast channel managed by the transmitter 2 block the transmission to the next stage, and sub-subscribers below the transmitter 2 cannot receive the broadcast cell.

If the network operator wants to permit the reception of the cell again, the active flag is set by setting the bit of the connection information table 41 to 1, so that the sub subscribers of the corresponding transmitting end 2 or less can receive the service of the broadcasting cell again. .

A cell control method for a broadcast channel according to an embodiment of the present invention is described with reference to the flowchart of FIG. 4 as follows.

First, it is determined whether or not a broadcast cell transmission request to all transmitters 40 is received from the network operator (step S41). When all the transmitting end 40 receives the broadcast cell transmission request, the bit is set to 1 in all channels of the transmitting end 40 and the activation flag is set (step S42), and then all the transmitting end 40 is transmitted with the broadcasting cell. (Step S43).

In addition to the method of step S42 and step S43, as well as a method of determining whether to transmit a cell from the source of the receiving end 10 to all channels as in the prior art.

However, when receiving the broadcast cell transmission prohibition request to the specific transmitter 40 without receiving the broadcast cell transmission request to all transmitters 40 from the network operator (step S44), the channel of the specific transmitter 40 is received. After the bit is set to 0, the inactivation flag is set (step S45), and transmission of the broadcast cell is stopped to sub-subscribers below the specific transmitter 40 (step S46).

Although the preferred embodiments of the present invention have been described in detail above, it will be understood by those skilled in the art that the present invention may be modified or modified in various ways. Therefore, changes of the embodiments of the present invention will not be able to escape the technical scope of the present invention.

As described above, the present invention can stop the broadcast cell to sub-subscribers below a specific transmitter by controlling the transmission / reception of the broadcast cell with a function of enabling or disabling the connection at the transmitter for a broadcast channel capable of transmitting the broadcast cell. It becomes possible.

Accordingly, by controlling only active and inactive flags for a channel without deleting and re-registering previously registered connection information, it is possible to ensure previously registered routing information, a band, and the like, and to restore or pause a system.

Claims (4)

A multicasting control unit for copying cells according to the number of subscribers and transmitting cells to a destination to an input terminal of a switch in an exchange that is directly connected to a receiving end that determines whether to transmit cells to all channels; And a transmitter configured to determine whether to transmit the broadcast cell transmitted from the multicasting control unit to specific sub subscribers. The method according to claim 1, And the transmitting end comprises a connection information table for setting active and inactive flags for managing whether or not to process a cell input in a register that manages information about a connection. Receiving a broadcast cell transmission prohibition request from an operator to a specific transmitter; Setting an inactive flag on a channel of the specific transmitter; And stopping the broadcast cell transmission to sub-subscribers below the specific transmitter. The method according to claim 3, When the network operator receives a broadcast cell transmission request to all transmitters, setting an active flag on channels of all transmitters; A cell control method for a broadcast channel, comprising the step of transmitting a broadcast cell to all transmitters.