JPH0654072A - Inter-node connecting system - Google Patents

Abstract

PURPOSE:To exchange user bus information in respective nodes by providing the link of a control signal for inter-node communication composed of plural modules at every user information bus the unit of a prescribed group. CONSTITUTION:Modules 11, 12, 21 and 22 perform the prescribed communication processing of a line module or a packet module, for example, and nodes 1 and 2 being an exchange processing system is composed of these plural modules. On the other hand, the modules 11 and 21 and the modules 12 and 22 are connected by user information buses A1-A5 in the unit of a handling group, and a control signal is transmitted between the nodes through buses B1-B5. When the module 21 requires any new service processing corresponding to user information A stored in the module 11, a module 23 is newly provided to process this new service, and the user information bus A3 and the control signal transmission bus B3 are newly housed in the module 23. Thus, the new service can be smoothly introduced without affecting the module 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-node connection system, and more particularly to a connection system between switching nodes forming an information network.

[0002]

2. Description of the Related Art For example, in a subscriber network, a common line signaling system is used in which a dedicated control signal line separated from a communication line is shared for controlling a plurality of communication lines. The common line signaling system significantly expands the types and capacities of signals because signals are expressed in bits, and because the signal function is separated from the telephone line, forward and backward signal transfer is possible regardless of the connection state of the call. It is possible to shorten the delay time related to the line connection by speeding up the signal transfer, and it is possible to operate both lines of the call line because the call line does not have a signal function.

For example, NTT Facility, Vol. 39, No. 1,
"Current status and future prospects of common line signaling network" by Masahiro Ueda et al. Described on pages 37 to 39 shows such a conventional technique of common line signaling. Conventionally, when exchanging control signals between the node stations of the exchange by the common line signaling method, for example, the modules 51, 52, 6 of FIG.
As shown by reference numerals 1 and 62, for example, one inter-node control signal line is provided for all the communication paths accommodated in one module such as a switching device, and the control of the communication path is performed by this control signal line. It was being done.

[0004]

When a plurality of modules are provided in one node, a change in the attribute of the path of the user information accommodated in one module, for example, a request for a new service, an increase in traffic, etc. , It becomes necessary to transfer one user information path to another module.

In such a case, however, in the conventional common line signaling method, when a user information path is to be accommodated in another module, it is necessary to change the common line between the module before the change and the module after the change. . Therefore, other user information paths are also affected, and it is necessary to perform processing for temporarily suspending the affected paths. As described above, the conventional common line signaling system cannot flexibly cope with new services and system expansion.

The present invention has a problem that a common line is changed when such a certain user path information is transferred from one module to another module, and another user path information is affected accordingly. It is an object of the present invention to solve the above problem and provide an inter-node connection method that can freely exchange user path information in each node.

[0007]

In order to solve the above problems, the present invention provides an information network system in which control signals are exchanged in a communication between nodes composed of a plurality of modules using a common line. , A control signal link between nodes is provided for each user information path in a predetermined group unit.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an internode connection system according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a system configuration diagram showing an embodiment of the present invention. In the figure, module 1
1, 12, 21 and 22 are modules for performing a predetermined communication process such as a line module, a packet module, a subscriber termination module or a signal processing module. The nodes 1 and 2 are an exchange processing system composed of these plural modules. In the figure, modules 11 and 21, module 1
A _{1 to} A ₅ shown by solid lines connecting 2 and 22 are user information paths of one handling group, and B _{1 to} B ₅ shown by dotted lines are paths for transmitting control signals between nodes.

When the transmission line between the modules is adopted according to SDH (Synchronous Digital Hierarchy) recommended by CCITT (International Telegraph and Telephone Advisory Committee), for example, A ₁ and B ₁ are STM-1 (synchronous). Transfer mode level 1: transmission rate is 156 Mbit / s, telephone channel number is 2016), and one STM-1 excluding B ₁ becomes a user information path of one handling group. The part of B ₁ in STM-1 is determined by the amount of information of B ₁ , but if the amount of information of 1.5 Mbps is required, a certain VC ₁₁ (virtual call)
Identify and allocate one. Therefore, a path is set for each of A _{1 to} A ₅ by the STM-1, and a predetermined VC ₁₁ in the corresponding STM-1 is allocated to each of the B _{1 to} B ₅ . Note that the B ₁ .about.B ₅ predetermined protocol is used.

In FIG. 1, when the module 21 needs to process a new service with respect to the user information A ₃ stored in the module 11, conventionally, for example, the new service is introduced by the connection as it is, This processing was performed at 21. This is because when the user information path is relocated to another module, the common line between the module before the change and the module after the change needs to be changed, so that the other user information paths are also affected, This is because a process for temporarily suspending the affected paths is required. However, when a new function is added to the module 21, there is a limit to the addition to the module depending on the function, and other user information paths may be affected.

In the present embodiment, in this case, a module 23 for processing this new service may be newly provided as shown in FIG. 2, and A ₃ and B ₃ may be accommodated in this module. As described above, in the inter-node connection method in the present embodiment, by setting a new control information link between the modules 11-23, it is possible to smoothly introduce a new service without significantly affecting the module 21. Becomes

In the present embodiment, the STM-1 has been described as an example, but the present invention is not particularly limited to this, and STM-4 or the like may be used. Further, in the present embodiment, a basic connection configuration between nodes is shown in order to facilitate understanding of the present invention, but it can be advantageously applied to an information network system having a hierarchical configuration.

[0014]

As described above, according to the inter-node connection method of the present invention, since the control signal link is set for each handling group having user information, the traffic of a certain handling group is increased or decreased. Even in this case, by replacing this handling group with another module, the system configuration can be freely made more efficient. Furthermore, according to the diversification of communication services, it is possible to construct a flexible system that is highly adaptable to each service, such as installing a new module and replacing the handling group included in the service required by this module. Become.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of an inter-node connection system according to the present invention.

FIG. 2 is a configuration diagram when accommodation is changed in the configuration of FIG.

FIG. 3 is a configuration diagram showing a connection between nodes in a conventional technique.

[Explanation of symbols]

1, 2 nodes 11, 12, 21-23 module A ₁ -A ₅ user information path B ₁ -B ₅ inter-node control signal

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinji Yasuda 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Kiminori Shinozaki 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo No. Japan Telegraph and Telephone Corporation

Claims (1)

[Claims] 1. In an information network system in which control signals are exchanged in a communication between nodes composed of a plurality of modules using a common line, a control signal link between nodes is provided for each user information path in a predetermined group unit. An inter-node connection method characterized by being provided in the.