JP2667766B2 - Node connection method - Google Patents

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, a common line signaling system in which a dedicated control signal line separated from a communication line is shared for controlling a plurality of communication lines is used in a subscriber network. The common line signaling system expresses signals in bits, greatly expanding the types and capacities of the signals, and separating the signal function from the telephone line to forward and reverse signal transfer regardless of the call connection status. It is possible to reduce the delay time related to the line connection by increasing the speed of signal transfer, and it is possible to operate both sides of the telephone line because the telephone line does not have a signal function.

For example, NTT Facilities, Vol. 39, No. 1,
"Current state and future prospects of common channel signaling network" by Masahiro Ueda et al., Which is described on pages 37 to 39, shows a conventional technique of such a common channel signaling system. Conventionally, when a control signal is exchanged between node stations of an exchange by a common channel signaling method, for example, the modules 51, 52, 6 in FIG.
As shown at 1 and 62, for example, one inter-node control signal line is provided to all communication paths accommodated in one module such as a switching device, and the control signal lines control the communication paths. Was being done.

[0004]

When one node has a plurality of modules, a change in the attribute of a path of user information contained in one module, for example, a request for a new service, an increase in traffic, etc. Then, it becomes necessary to accommodate a certain user information path in another module.

However, in such a case, in the conventional common channel signal system, if a user information path is to be accommodated in another module, the common line between the module before the change and the module after the change must be changed. . For this reason, other user information paths are also affected, and it is necessary to perform processing for temporary suspension of these affected paths. As described above, the conventional common line signaling system cannot flexibly cope with new services and system expansion.

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

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a connection between nodes accommodating a plurality of modules is established by a user information path in a predetermined group unit and a user information path. Is performed by a handling group in which a control signal link corresponding to. That is, a module accommodated in a certain node,
A connection with a module accommodated in another node is made by a handling group. When introducing a new service or expanding the system, accommodation modules are replaced in units of handling groups.

[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, modules 11, 12, 2
Reference numerals 1 and 22 denote modules for performing predetermined communication processing, such as a line module, a packet module, a subscriber line termination module, and a signal processing module.
The nodes 1 and 2 are exchange processing systems including the plurality of modules. The connection of the modules 11 and 21 and the modules 12 and 22 is performed on a handling group basis. Here, the handling group means a group of a user information path in a predetermined group unit and a control signal link corresponding to this user information path. For example, in FIG.
A1 to A5 indicated by solid lines correspond to user information paths in a predetermined group unit, and B1 to B5 indicated by dotted lines correspond to user information paths, and represent control signal links for transmitting control signals between nodes.

[0010] The transmission path between modules, CCITT when employed ones according to the SDH which is recommended by the (International Telegraph and Telephone Consultative Committee) (Synchronous Digital Hierarchy), STM-1 (synchronous, for example A ₁ and B ₁ transfer mode level 1: transmission rate 156 Mbit / s, telephone channel number 2016) and one, minus the amount of B ₁ from the STM-1 is the user information path one handling groups. B ₁ part in STM-1 is determined by the amount of information B _1, for example, it requires the information amount of 1.5 Mbps, there VC ₁₁ (virtual call)
Identify and assign one. Thus A ₁ to A ₅ each are set path at _STM-1, B 1 ~B ₅ will be allocated a certain VC ₁₁ 1 present in the corresponding STM-1. A predetermined protocol is used for B _{1 to} B ₅ .

In FIG. 1, when a new service needs to be processed by the module 21 with respect to the user information A ₃ stored in the module 11, a new service is conventionally introduced by, for example, the same connection, This processing was performed at 21. This means that if the 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, so that the other user information paths will also be affected, This is because it is necessary to perform a process for temporarily stopping the affected path. 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 this embodiment, in this case, as shown in FIG. 3, a module 23 for processing this new service is newly provided, and only one handling group, that is, only the user information path A3 and the control signal link B3 are provided. What is necessary is just to change accommodation to the module 23. As described above, in the inter-node connection method according to the present embodiment, even when the modules are connected to each other by a plurality of handling groups, only the necessary handling groups need to be replaced. In this way, the introduction of the new service is
It can be performed smoothly without having a significant effect on

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

[0014]

As described above, according to the inter-node connection method of the present invention, since a control signal link is set for each handling group having user information, the traffic of a certain handling group increases or decreases. Even in this case, by changing the handling group into another module, the system configuration can be freely and efficiently made. Furthermore, with the diversification of communication services, new modules can be installed and the handling groups included in the services required for these modules can be accommodated and replaced, and a flexible system with excellent adaptability to each service can be constructed. Become.

[Brief description of the 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. 1;

FIG. 3 is a configuration diagram showing connection between nodes in the related art.

[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 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Kiminori Shinozaki 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone (56) References JP-A-3-242074 (JP, A)

Claims (1)

(57) [Claims] In an inter-node connection method for connecting nodes accommodating a plurality of modules, a user information path in a predetermined group unit and a control signal link corresponding to the user information path are defined as one unit. An inter-node connection comprising forming a handling group, connecting modules accommodated in different nodes by one or more handling groups, and performing accommodation switching to another module for each handling group. method.