Transmission network system

• US 20050180420A1
• Filed: 03/22/2005
• Published: 08/18/2005
• Est. Priority Date: 04/17/2003
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Wang, Zhenhua, Kurashima, Kenji, Togo, Toshihiro
• Granted Patent: US 7,724,731 B2
• Time in Patent Office: Days
• US Class Current: 370/389
• CPC Class Codes: H04J 2203/006 Fault tolerance and recovery
• CPC Class Codes: H04J 2203/0067 Resource management and allocation
• CPC Class Codes: H04J 2203/0069 Channel allocation
• CPC Class Codes: H04J 3/12 Arrangements providing for calling or supervisory signals
• CPC Class Codes: H04J 3/1611 Synchronous digital hierarchy [SDH] or SONET H04J3/1664 takes precedence for interactions with OTN
• CPC Class Codes: H04L 49/357 Fibre channel switches

Abstract

In a transmission network system in which a path is set between a transmission node and a receiving node and which transmits a transmission signal between the nodes, crossconnect settings of the nodes are enabled while personal settings are minimized. A transmission node has a first path-setting-receiving section; transmission-path-setting change sections; and change insertion sections which report information about a change in path setting received by said path-setting-receiving section by inserting the information into a transmission signal to be transmitted from the node to a receiving node. The receiving node has a second path-setting-receiving section and receiving-path-setting change sections for changing path settings of the node on the basis of the information about a change in path setting.

Claims

1. A transmission network comprising a transmission node and a receiving node, wherein said path is set between a transmission node and a receiving node and a transmission signal is transmitted between the nodes, wherein

said transmission node comprises:

a first path-setting-receiving section for receiving a change in a path setting when said path setting to be applied to said transmission signal is changed;

a transmission-path-setting change section for changing a path setting of said transmission node on the basis of said change in path setting received by said first path-setting-receiving section; and

a change insertion section for reporting information about said change in path setting received by said path-setting-receiving section by inserting said information into a transmission signal to be transmitted from said transmission node to said receiving node; and

wherein

said receiving node comprises;

a second path-setting-receiving section for receiving information about said change in path setting inserted into said transmission signal; and

a receiving-path-setting change section for changing a path setting of a node on the basis of information about said change in path setting.

2. The transmission network according to claim 1, wherein said path between said transmission node and said receiving node is set by way of a transit node;

and wherein

said transit node on said path comprises;

a section which receives information about said change in path setting inserted in said transmission signal;

a transit-node-path-setting change section which changes a path setting of a node on the basis of information about said change in path setting; and

a transit transmission section which passes a transmission signal into which said change in path setting is inserted to said receiving node on said path, on the basis of said path setting changed by said transit-node-path-setting change section.

3. The transmission network according to claim 1, wherein said first path-setting-receiving section of said transmission node receives, as said change in path setting, address information about an input port of said transmission node into which a low-order group signal lower in order than said transmission signal is to be input;

and

said transmission-path-setting change section changes settings of an input port of said transmission node in accordance with said address information received by said first path-setting-receiving section.

4. The transmission network according to claim 2, wherein said first path-setting-receiving section of said transmission node receives, as said change in path setting, address information about an input port of said transmission node in to which a low-order group signal lower in order than said transmission signal is to be input;

and

said transmission-path-setting change section changes settings of an input port of said transmission node in accordance with said address information received by said first path-setting-receiving section.

5. The transmission network according to claim 1, wherein said first path-setting-receiving section of said transmission node receives, as said change in path setting, information indicating that an input port of said transmission node into which a low-order group signal lower in order than said transmission signal is to be input is changed to another, unoccupied input port;

and

said transmission-path-setting change section retrieves another, unoccupied input port in accordance with said address information received by said first path-setting-receiving section and change settings such that said input port of said transmission node is changed to said retrieved, unoccupied input port.

6. The transmission network according to claim 2, wherein said first path-setting-receiving section of said transmission node receives, as said change in path setting, information indicating that an input port of said transmission node into which a low-order group signal lower in order than said transmission signal is to be input is changed to another, unoccupied input port;

and

said transmission-path-setting change section retrieves another, unoccupied input port in accordance with said address information received by said first path-setting-receiving section and change settings such that said input port of said transmission node is changed to said retrieved, unoccupied input port.

7. The transmission network according to claim 1, wherein said first path-setting-receiving section of said transmission node receives, as said change in path setting, address information about an output port of said transmission node to which a high-order group signal corresponding to said transmission signal is to be output;

and wherein

said transmission-path-setting change section changes settings of said output port of said transmission node, in accordance with said address information received by said first path-setting-receiving section.

8. The transmission network according to claim 1, wherein said first path-setting-receiving section of said transmission node receives, as said change in path setting, address information indicating that an output port of said transmission node is given address information agreeing with said address information about said input port into which a low-order group signal lower in order than said transmission signal is to be input;

and

said path-setting change section changes settings of said output port of said transmission node in accordance with said information received by said first path-setting-receiving section.

9. The transmission network according to claim 1, wherein said first path-setting-receiving section of said transmission node receives, as said change in path setting, information indicating that an input port of said transmission node into which a high-order group signal higher in order than said transmission signal is to be input is changed to another, unoccupied input port;

and

said transmission-path-setting change section retrieves another, unoccupied input port in accordance with said address information received by said first path-setting-receiving section and change settings such that said input port of said transmission node is changed to said retrieved, unoccupied input port.

10. The transmission network according to claim 1, wherein said second path-setting-receiving section of said receiving node receives, as said change in path setting, address information about an output port of said receiving node to which a low-order group signal lower in order than said transmission signal is to be output;

and wherein said receiving-path-setting change section changes settings of said output port of said receiving node, in accordance with said address information received by said second path-setting-receiving section.

11. The transmission network according to claim 1, wherein said second path-setting-receiving section of said receiving node receives, as said change in path setting, information indicating that an output port of said receiving port to which a low-order group signal lower in order than said transmission signal is to be output is given address information agreeing with said address information about said input port of said receiving node to which a high-order group signal corresponding to said transmission signal is to be input;

and wherein

said receiving-path-setting change section changes settings of said output port of said receiving node, in accordance with said information received by said second path-setting-receiving section.

12. The transmission network according to claim 1, wherein said second path-setting-receiving section of said receiving node receives, as said change in path setting, information indicating that an output port of said receiving node into which a low-order group signal lower in order than said transmission signal is to be input is changed to another, unoccupied input port;

and

said receiving-path-setting change section retrieves another, unoccupied output port in accordance with said address information received by said second path-setting-receiving section and changes settings such that said output port of said receiving node is changed to said retrieved, unoccupied input port.