JPH0622357B2 - Control channel method - Google Patents

Description

The present invention relates to a control channel system for performing remote control between time division multiplexers. In particular, the present invention relates to a control channel system effective for remote control when there is a time division multiplexing device for relaying.

〔Overview〕

The present invention secures a predetermined time slot of multiplexed data of a multiplexing line as an adjacent control channel for controlling an adjacent time division multiplexer in a control channel system for performing remote control between time division multiplexers. In addition, a predetermined time slot of the multiplexed data of the multiplexed line is secured as a remote control channel for controlling the remote time division multiplex device common to each time division multiplex device separately from the adjacent control channel, and relaying is performed. The time division multiplexer that performs the time division that performs relay when performing remote control by connecting or releasing the remote control channel between the time division multiplexers specified in the connection request or release request from the adjacent control channel. There is no transfer delay of the multiplexer and the load of software processing is reduced.

[Conventional technology]

Conventionally, the control channel method assigns one control channel to the multiplexed data of the multiplex line in a time slot to control the time-division multiplexers that face each other in the multiplex line and directly control the multiplex line in the multiplex line. In the case of remote control of a time division multiplex device that is not remote, it has been realized by providing a software relay means to the time division multiplex device for relaying that is present on the way.

[Problems to be solved by the invention]

However, in such a conventional control channel system, when there is a time division multiplex device that performs relay with a time division multiplex device to be remotely controlled, the control unit of the time division device that performs relay once controls When data from a channel is received and internally analyzed by software, if it is not addressed to the device itself, the received data must be transmitted as relay data, so a wasteful load is applied to the control unit of the time division device that performs the relay. There was a flaw. Further, since the relay is performed by software, there is a drawback that the data transfer delay increases as the number of relays increases.

The present invention solves the above-mentioned drawbacks, and an object of the present invention is to provide a control channel system in which there is no transfer delay of a time-division multiplexer which performs relay when remote control is performed and the load of software processing is small.

[Means for solving problems]

According to the present invention, adjacent time division multiplexers are connected by multiplexing lines to form a network of three or more time division multiplexers, and one of the time division multiplexers is its own device. In a control channel system in which non-adjacent time-division multiplexers are remotely controlled via time-division multiplexers adjacent to the self-apparatus, each time-division multiplexer of the above network is given its own device number, and adjacent time-division multiplexers are assigned. A predetermined time slot of the multiplexing line connecting the multiplex devices is set as an adjacent control channel for controlling the adjacent time division multiplex device, and the time of the multiplex line connecting the adjacent time division multiplex devices is set. A predetermined time slot is assigned to the time division multiplexer separately from the adjacent control channel and is shared by the time division multiplexer. One time division multiplexer, which is reserved as a remote control channel for performing the remote control, intends to perform the remote control, and the adjacent time division multiplexer is adjacent to the multiplexing line with the time division multiplexer. The control channel transmits the connection request or release request to the remote control target time division multiplexer with the device number of the remote control target time division multiplexer added thereto, and the remote control channel of the multiplexed line. Time division that connects or releases with the control unit and receives the connection request or release request transmitted by the one time division multiplexing apparatus via the adjacent control channel of the multiplexing line with the opposing time division multiplexing apparatus. The multiplex device checks whether the connection request or release request is addressed to its own device or another device based on the added device number, and when it is addressed to another device, The connection request or release request is sent on the adjacent control channel of the multiplex line in the direction of the time division multiplex device to be remote controlled, and the remote control channel and the remote control of the opposite time division multiplex device multiplex line are transmitted. Connects or releases the remote control channel of the target multiplex line in the direction of the time division multiplexer, and when it is addressed to itself, the multiplexing between the control unit of the own equipment and the opposite time division multiplexer. The remote control channel with the one time division multiplexer is connected or released by connecting or disconnecting the line with the remote control channel.

[Action]

A device number is assigned to each time division multiplex device. A predetermined time slot of the multiplexed data of each multiplex line is secured as an adjacent control channel, and the time division multiplexers facing each other are controlled through the multiplex line. A predetermined time slot is secured in the multiplexed data of each multiplex line as a remote control channel common to the time division multiplexers separately from the adjacent control channel. The remote control time division multiplexer adds the device number of the remote time division multiplexer to the connection request or release request to the remote time division multiplexer for the adjacent control channel for the relay time division multiplexer, and relays The remote control data is allocated to the remote control channel for the time division multiplex device for performing the transmission and transmitted to the time division multiplex device for relaying. The time division multiplex device for relay is a remote control channel for the time division multiplex device for relaying based on the device number added to the transmitted connection request or release request and a remote control channel for the remote time division multiplex device. Connect or release and. With the above operation, there is no transfer delay of the time division multiplexing apparatus which performs relay when remote control is performed, and the load of software processing can be reduced.

〔Example〕

 Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a control channel device according to an embodiment of the present invention. In the figure, the control channel devices are a time division multiplexer 110, a time division multiplexer 120 connected to the time division multiplexer 110 via a multiplexing line 140, and a time division multiplexer 120.
A time division multiplexer 130 connected to the
With. In this embodiment, there are three time division multiplexers, and the time division multiplexer 110 remotely controls the time division multiplexer 130 using the time division multiplexer 120 as a relay device.

The multiplexing line 140 includes an adjacent control channel 141, a remote control channel 142 that is commonly reserved for each time division multiplexer 110, 120, 130, and a data channel area 143.

The multiplexing line 150 includes an adjacent control channel 151, a remote control channel 152 that is commonly reserved for each time division multiplexer 110, 120, 130, and a data channel area 153.

The time division multiplexing apparatus 110 is a channel interface section that interfaces with a control section 112 that performs adjacency control and remote control and transmission / reception of data of each channel with a device (not shown).
Including 115. Further, it is connected to the control unit 112 via the adjacent control line 113 and the remote control line 114, respectively, and further connected to the channel interface unit 115 via the channel line 116, and the adjacent control data, the remote control data and each channel are connected. The data of the above is multiplexed and connected to the adjacent control channel 141, the remote control channel 142 and the data channel area 143.

The time division multiplexing apparatus 120 is a channel interface section that interfaces the control section 122 that performs adjacency control and remote control, and the transmission / reception of data of each channel with a device (not shown).
Including 126 and 127. In addition, the control line 1 adjacent to the control unit 122
23 and 124 and the remote control line 125, respectively, and further connected to the channel interface units 126 and 127 via the channel lines 128 and 129, and the adjacent control channel 141 to the adjacent control line 123. Data is separated and given to the control unit 122, the remote control channel 142 is connected to the remote control channel 152 under the control of the control unit 122,
Data channel area 143 is connected to channel line 128 and data channel area 153, data channel area 153 is connected to channel line 129, and adjacent control line 12
It includes a demultiplexer 121 connecting 4 to the adjacent control channel 151.

The time division multiplexing apparatus 130 is a channel interface section that interfaces with a control section 132 that performs adjacency control and remote control and transmission / reception of data of each channel with a device (not shown).
Including 135 and. Further, it is connected to the control unit 132 via the adjacent control line 133 and the remote control line 134, respectively, and further, to the channel interface unit 135.
36 connected to each other and adjacent control channels 151,
The remote control channel 152 and the data channel area 153 are connected to and separated from the adjacent control line 133, the remote control line 134 and the channel line 136, respectively, and the adjacent control data, the remote control data and the data of each channel are connected to the control unit 132 and the channel interface. It includes a demultiplexing unit 131 provided to the unit 135.

The operation of the control channel device having such a configuration will be described. In the following description, channel reservation means a state in which time slots for transferring channel data are reserved but no channel data is transferred, and channel allocation is channel allocation. It is used to indicate the state where channel data can be transferred by performing time slot allocation to transfer the data. First, the reserved state of the remote control channel will be described.

In the figure, the device numbers of the time division multiplex devices 110, 120 and 130 are set as device number 1, device number 2 and device number 3, respectively. The demultiplexing unit 111 of the time division multiplexers 110, 120 and 130,
121 and 131 indicate time slots of multiplexed data transferred on the multiplexing lines 140 and 150, adjacent control channels 141 and 151, remote control channels 142 and 152, and data channel areas 143 153.
Divide into and use. The adjacent control channel 141 / remote channel 142 and the adjacent control channel 151 / remote control channel 152 are assumed to always secure a predetermined time slot position for their respective multiplexed data, and the remaining time slots accommodate low-speed line data. The data channel areas 143 and 153 are reserved as data channel areas. Time division multiplexer
The demultiplexing unit 111 of 110 allocates the data of the adjacent control line 113 from the control unit 112 to the adjacent control channel 141, and allocates the data of the channel line 116 from the channel interface unit 115 to the time slot in the data channel area 143. I am wearing it. The remote control line 1 from the control unit 112
14 data allocations have not been made.

Similarly, the demultiplexing unit 121 of the time division multiplexing device 120 also has a control unit 12
The data of the adjacent control lines 123 and 124 from 2 are allocated to the adjacent control channels 141 and 151, respectively, and the data of the channel lines 128 and 129 from the channel interface units 126 and 127 and the bypass data are allocated to the data channel areas 143 and 1.
It is assigned to the time slot in 53, and the data of the remote control line 125 from the control unit 122 is not assigned.

Similarly, the demultiplexing unit 131 of the time division multiplexing apparatus 130 also has a control unit 13
Adjacent control channel 133 data from adjacent control line 133
The data of the channel line 136 from the channel interface unit 135 is allocated to the time slot in the data channel area 153, and the data of the remote control line 134 from the control unit 132 is not allocated.

As described above, since the demultiplexing units 111, 121, and 131 perform the internal allocation, one adjacent control line is established between the control unit 112 and the control unit 122, and the control unit 122 and the control unit 122 are controlled. Another adjacent control line is established with the section 132. By providing the control unit 122 with software relay means, control by software relay between the control unit 112 and the control unit 132 is enabled and data communication between the channel interface units is enabled. There is.

Here, the operation when the time division multiplexing apparatus 110 and the time division multiplexing apparatus 130 want to perform direct control will be described.

Each control unit 112, 122, 132 is set with a device number route table indicating which device number is on which multiplexing line of its own device, or the device number is determined by collecting information by adjacent control lines. A route table is created.

The control unit 112 assigns the direct connection request in which the transmission source device number is set to the device number 1 and the destination device number is set to the device number 3 to the adjacent control channel 141 of the multiplexed line 140 according to the device route table. Send to line 113 and remote control channel 142 and remote control line 114
Are assigned by the demultiplexing unit 111 so as to be connected. Control unit 1
22 receives this direct connection request through the adjacent control line 123.

When the control unit 122 decodes the received direct request and finds that the direct connection is between the device number 1 and the device number 3, the device number 3 is multiplexed by referring to the device number route table because it is not the own device number. The direct connection request is sent to the adjacent control line 124 allocated to the adjacent control channel 151 of the multiplexed line 150 after confirming that it is in the direction of the device number 150, and the device number is based on the device number route table. 1 is in the direction of the multiplexed line 140,
Since it can be seen that the device number 3 is in the direction of the multiplex line 150, the remote control channel 142 and the remote control channel 152 are allocated so as to be bypass-connected by the demultiplexing unit 121.

When the control unit 132 receives the data of the adjacent control channel 151 through the adjacent control line 133 and decodes that the content is a direct connection request between the device number 1 and the device number 3, the device itself is the device number 3. This causes the demultiplexing unit 131 to allocate so that the remote control channel 152 and the remote control line 134 are connected. As a result, the time division multiplex device 12 is provided between the time division multiplex device 110 and the time division multiplex device 130.
A direct connection remote control line not including software relay by the control unit 112 of 0 is established.

In addition, when the direct connection is released or abnormally, the direct connection release request is similarly issued by using the adjacent control line so that each time division multiplexing device refers to the device number route table for the allocation of the device numbers to be released. Then, by performing allocation deletion, the remote control channel can be returned to the reserved state.

〔The invention's effect〕

As described above, the present invention has the excellent effects of eliminating the relay delay of the time division multiplexing device for relaying and reducing the load of software processing.

Further, by reserving one remote control channel for the multiplexed line, direct control can be performed among all time division multiplexers as needed, which has the advantage of not lowering transmission efficiency.

[Brief description of drawings]

The figure is a block diagram of a control channel device according to an embodiment of the present invention. 110, 120, 130 …… Time division multiplexer, 111, 121, 131 ……
Demultiplexing unit, 112, 122, 132 ... Control unit, 113, 123, 12
4, 133 ... Adjacent control line, 114, 125, 134 ... Remote control line, 115, 126, 127, 135 ... Channel interface section, 116, 128, 129, 136 ... Channel line, 14
0,150 ... multiplexed lines, 141, 151 ... adjacent control channels, 142, 152 ... remote control channels, 143, 153 ... data channel areas.

Claims (1)

[Claims] 1. A time division multiplexer is connected between adjacent time division multiplexers to form a network of three or more time division multiplexers, and one of the time division multiplexers is its own device. In a control channel system in which a time division multiplex device that is not adjacent to the above is remotely controlled via the time division multiplex device that is adjacent to itself, each device number is assigned to the time division multiplex device of the above network and A predetermined time slot of a multiplexing line connecting between division multiplexers is set as an adjacent control channel for controlling an adjacent time division multiplexer, and a multiplexing line connecting between adjacent time division multiplexers. Of the time division multiplex device in which the predetermined time slot of is commonly assigned to the time division multiplex device separately from the adjacent control channel. The time-division multiplexer, which is reserved as a remote control channel for remote control, tries to perform the remote control, and the above-mentioned multiplexing line between the time-division multiplexer and the time-division multiplexer is adjacent to the time-division multiplexer. The device number of the time-division multiplexer of the remote control target is added to the connection request or the release request with the time-division multiplexer of the remote control target on the adjacent control channel, and the remote control channel of the multiplexed line is transmitted. When the connection request or the release request transmitted by the one time division multiplexer is received by the adjacent control channel of the multiplexing line between the opposite time division multiplexer and the control section, The division multiplexer determines whether the connection request or release request is addressed to its own device or another device based on the added device number, and when it is addressed to another device. , The connection request or release request is transmitted on the adjacent control channel of the multiplexing line in the direction of the time division multiplexer to be remote controlled, and the remote control channel and the remote of the opposite time division multiplexer multiplexing line are transmitted. Connects or releases the remote control channel of the multiplexing line in the direction of the time-division multiplexer to be controlled, and when it is addressed to itself, the multiplexing between the control unit of the own equipment and the opposing time-division multiplexer. A control channel system characterized by connecting or releasing a remote control channel to or from the one time division multiplex device by connecting or releasing a communication line to or from the remote control channel.