KR100224110B1 - Multi-drop/insert method of broadcasting line data in a multiplex system - Google Patents

Abstract

According to the present invention, one outgoing port used in the center can be simultaneously used by multiple subscribers in multiple regions, thereby increasing the type of service that can be transmitted per leased line by one transmission device, and one outgoing call. It increases the number of subscribers who can service even with a port and lowers the cost of using a dedicated line. The multiplexing apparatus has an input channel and an output channel, and the bidirectional / unidirectional switching is arbitrarily selected in connection / disconnection of the input channel and the output channel.

Description

Multidrop / Insert Method of Broadcast Line Data in Multiplexing System

The present invention relates to a data transmission method in a transmission apparatus, and more particularly, to a multidrop / insert method of broadcast line data in a multiplexing apparatus using a multidrop / insert method when transmitting broadcast line data through a transmission apparatus.

In the conventional transmission device, the drop / insert method is used by constructing point-to-point (end-to-end). That is, in a public network using a dedicated line as shown in FIGS. 1 to 3, a trunk line occupies a channel in proportion to the number of subscribers to be connected in the total number of channels (24/30) that one trunk line can allocate to a user. While using a one-to-one concept. As shown in the example of FIG. 2, in order to transmit broadcast line data to the second subscriber 116 of the second local 107 and the third subscriber 115 of the fourth local 111, a transmission port is provided to the center 101. It requires two (second user u2, third user u3) and second dedicated line 123 must occupy different channels for two subscribers. The first, third, and fourth dedicated lines 121, 125, and 126 occupy channels (aa, cc, dd) to which the first, third, and fourth users (u1.u3, u4) are allocated for each line, and the second dedicated lines (123). Occupies different channels bb and cc to which second and third users u2 and u3 are assigned. In the above-described phenomenon, in transmitting the broadcast line data through the same line according to the number of subscribers, the center 101 has to increase the number of outgoing ports by the number of subscribers and the number of trunk line channels to be occupied by the user increases. There is a problem in that the transmission apparatus reduces the capacity for transmitting various services to multiple users.

Therefore, the purpose of the present invention is to provide a method for simultaneously using a single outgoing port used in the center can be used by multiple subscribers in multiple regions.

Another object of the present invention is to increase the types of services that can be transmitted per leased line by one transmission device, increase the number of subscribers that can be serviced with one outgoing port, and lower the cost of the dedicated line. In providing.

In order to accomplish the above object, the present invention provides a multi-drop / insert method for broadcasting line data of a multiplexing device, the input channel and output channel of the multiplexing device, and the bidirectional / It is characterized in that the unidirectional switching is arbitrarily selected.

1 is a broadcast circuit diagram of a conventional multiple device

2 is a block diagram of a broadcasting line network system in a conventional multiple device

3 is a diagram illustrating a configuration of a broadcasting line network-2 system in a conventional multiple device

4 is a broadcast circuit diagram of multiple devices of the present invention;

5 is a configuration diagram of a broadcasting line network system in multiple devices of the present invention;

6 is a schematic diagram of a local-2 system in multiple devices according to the present invention.

7 is a system diagram according to an embodiment of the present invention.

8A, 8B, 8C are flow charts in accordance with an embodiment of the present invention.

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

4 and 5 is a configuration of the center system according to an embodiment of the present invention,

The center 103 is connected to the outgoing center 101, but the center 103 is connected to the data distributor 213 with the first-third user U1-U3, and the first-third user U1-. U3 is connected to the switching card 211, and the first to third line cards L1 to L3 are connected to the switching card 211. The first-fourth local 105, 107, and 109 are connected to the first-three-line card L1-L3 of the center 103 through the first-three-only line 121-123, 125, and the first-four local ( Terminals 311-325 are connected to 105, 107, 109, and 111. The number of terminal connections can be increased or decreased arbitrarily.

FIG. 6 is an exemplary view of the second local 107 of FIGS. 4 and 5.

The center 103 and the fourth line card L4 are connected to each other, and the fourth local 111 and the fifth line card L5 are connected to each other, and the terminals 314 and 315 are connected to the terminal connection card U. The switching between the fourth line card L4, the fifth line card L5, and the terminal connection card U is performed by the switching card 211.

FIG. 7 is a detailed circuit diagram of the switching card 211 of FIGS. 5 and 6.

The time switch 702 is connected between the first and second trunks 701 and 703, the time switch 702 switches between the first and second trunks 701 and 703 so as to communicate in both directions, and the user card 704 and 705 are connected. And trunk 701 switch to one-way communication.

8 is a flowchart according to an embodiment of the present invention.

A first process of occupying a transmission (Tx) and occupying the channel and setting a sub-index if the channel to be occupied is out of service when it checks whether the channel is occupied by another service;

A second process of occupying a reception (Rx) and occupying a channel and setting a sub-index if the reception is not only outgoing but only in the first process;

A third process of messaging as an error in the second process if it is not exclusively received, performing sub-index processing in the first and second processes, setting a master port, and buffering subchannel information, subscriber information, and multiplexing information;

A fourth step of checking whether the channel to be occupied in the first step is a cross connection area when the channel is in service;

A fifth step of checking whether the number of channels required for the broadcast line is greater than the number of cross connection channels if the broadcast line is a usable cross connection area in the fourth connection step;

A sixth process of arbitrarily designating a sub-index from 1 when the number of required broadcast line channels is not the first connection, and setting the sub-index to 1 when the initial connection is established, specifying the mast port, and receiving switching;

A seventh process of checking whether the characteristics of the existing broadcasting line and the existing broadcasting line are the same as other broadcasting line connecting regions when the cross connecting region is not;

An eighth step of checking whether the transmission-only property is identical if the characteristics are the same in the seventh step;

In the eighth step, if there is an outgoing-only transmission on the existing broadcasting line as an outgoing transmission, messaging with an error; if the outgoing-only transmission does not exist, a ninth process of setting a sub-index to 0 and switching Tx;

If it is designated not in the transmission-only but in the reception-only range, the tenth step is to perform Rx switching by arbitrarily designating sub-index 1 and buffer subchannel information, subscriber information, and multiplexing information.

Therefore, a specific embodiment of the present invention will be described in detail with reference to FIGS.

In the present invention, as shown in Fig. 4 to Fig. 6, many first-four locals 105, 107, 109 and 111 and subscribers 311-325 can be designated and serviced in the same channel. To this end, the time switch 702 of FIG. 7 is controlled to switch between the first and second trunks 701 and 703 so that bidirectional communication is possible. The determination according to the transmission in any direction is controlled by FIG. 8.

When the center 101 transmits the broadcast data or receives the broadcast data from the broadcast line equipment of the center 101 in the region, the operator interface unit receives various information of the broadcast line set by the operator and is managed by the system manager. It is put in the database area to make a system information database. When the condition of activating the broadcast line port is reached, the call connection / disconnection unit connects the broadcast line to a specific channel of the trunk line to which the broadcast line is to be connected. You must check the connection conditions. If these conditions are not satisfied, one-way connection for multiplexing is not performed and the error condition is processed to review the connection condition because the connection condition is not suitable for the operator. That is, in the process of 8a, 8b, and 8c of FIG. 8c, the CPU of the time switch 702 checks whether the channel to be occupied is among other services. If the channel to be occupied is out of other services, check whether it is exclusively outgoing in step (8b). If it is only outgoing in step (8b), it switches Tx in step (8g) and occupies the channel and serves in (8h). Set the index to zero. However, if the transmission is not dedicated in step (8b), it is checked whether the reception is exclusive in step (8c). If it is not exclusive to receive in step (8c), error message is set in step (8i). In step (8c), if the reception is not exclusive, Rx switching is performed in step (8d) and the channel is occupied, and in step (8e), the sub index is set to 1. In step (8e, 8h), the corresponding servo index is set, and in step (8f), the master port is set, and subchannel information, subscriber (broadcast line) information, and multiplexing information are buffered. However, if the channel to be occupied in step (8a) is in another service, it is checked whether it is in the cross connection area in step (8j). If it is within the cross connection area in step (8j), it is checked whether the broadcast line is an available cross connection area. In the cross connection area in step (8j), it is checked in step (8v) whether the number of the cross connection channels is larger than the number of channel demands on the broadcast line. If the number of channels required for the broadcasting line in step (8v) is large, it is checked whether the connection is the first connection in step (8w). If the connection is not the first connection in step (8w), the unused subindex in step (8y) is arbitrarily designated from 1. However, if it is the first connection in step (8w), the sub-index is set to 1 in step (8x), the master port is set in step (805), and Rx switching is performed in step (8z). If it is not the cross connection area in step (8j), check whether another broadcasting line connection area is checked in step (8k), and if it is the corresponding connection, check whether the characteristics of the existing broadcasting line and mine are the same in step (8l). If it is the same in the process (8l), it is checked whether the call-only transmission in the process (8m), and if the call-only in the process (8m), it is confirmed whether the transmission-only in the existing broadcasting line exists in the process (8n). If the existing line exists exclusively for transmission, error messaging is performed in step 804. However, if there is no dedicated transmission line in the existing broadcasting line in step (8n), the sub-index is set to 0 in step (8s), and Tx switching is performed in step (8t). On the other hand, if it is not a transmission-only in step (8m), it checks whether the reception-only in (8q). If it is reception-only in step (8q), it is checked whether it is specified within the use range in step (8r). In step (8r), if it is specified within the use range, an unused index is arbitrarily designated from 1 as a subindex, and Rx switching is performed. As described above, since unidirectional switching can arbitrarily select Tx / Rx switching, other data transmission and reception are possible using the same channel from the local area to the center. In other words, if there is only one outgoing port in the fourth local 111, it follows the passage to the center currently in use and loads the data sent from the center to the channel, which is different from the center in the fourth local 111. If the data is transmitted and there is a receiving port in the center, the fourth local 111 can receive the data sent. This means that different data can be transmitted and received using the same channel on the same channel and the same trunk line. This can provide subscribers with different data using the same channel if there are multiple service centers and multiple sub-centers.

As described above, the present invention increases the number of service subscribers connected to the same passage as one device, thereby reducing the cost of operating and maintaining transmission equipment, and connecting other subscribers to a specific channel to provide different services. By enabling the use of free channels that can be used to enable efficient use of the channel bank, there is an advantage of lowering the line price to those who provide a variety of services using the transmission device.

Claims (3)

In the multi-drop / insert method of the broadcast line data of the multiplexing device, having a input channel and an output channel of the multiplexing device, and bi-directional / unidirectional switching in the connection / disconnection of the input channel and the output channel arbitrarily selected How to. In the multi-drop / insert method of the broadcast line data of the multiplexing device, the process of connecting with a plurality of subscribers in the channel of a specific transmission line of the multiplexing device, and the channel occupied by the subscriber is multiplexed into multiple channels instead of one channel multiplexing And connecting the channel of another specific transmission line in the channel of the specific transmission line to simultaneously load a subscriber on the same channel. In the multi-drop / insert method of broadcasting line data of a multiplexing device, if the channel to be occupied is other service and is not in service, the transmission (Tx) switching and the channel are occupied and the sub-index is set when the transmission is exclusive. A second process of occupying a receive (Rx) switch and a channel and setting a sub-index if the receiving process is not exclusive to outgoing and receiving only in the first process, and messaging with an error if not receiving only in the second process And performing a sub-indexing process in the first and second processes, setting a master port and buffering subchannel information, subscriber information, and multiplexing information, and when the channel to be occupied in the first process is in service. A fourth step of checking whether the connection area is applied; and a cross connection area in which the broadcasting line is usable when the cross connection area is used in the fourth step; A fifth step of checking whether the number of channel demanded channels is larger than the number of cross connection channels; if the number of channel demands is large, a subindex is arbitrarily assigned from 1 unless the initial connection is established. A sixth process of designating a port and then receiving switching; and a seventh process of checking whether the characteristics of the existing broadcasting line and the existing broadcast line are the same as other broadcasting line connecting areas when the cross connection area is not the same; The eighth step of checking whether the transmission is exclusive, and if the transmission only exists in the existing broadcasting line as the transmission only in the eighth step, messaging with an error; and if the transmission only does not exist, setting the sub index to 0 and switching Tx. In step 9, if it is designated within the range of use for reception only and not for transmission only, sub-index 1 can be arbitrarily designated and Rx And a tenth process of performing switching and buffering subchannel information, subscriber information, and multiplexing information.

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