Transceiver, optical transmitter, port-based switching method, program, and storage medium

• US 20060209679A1
• Filed: 03/16/2006
• Published: 09/21/2006
• Est. Priority Date: 03/18/2005
• Status: Abandoned Application

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Ishino, Naoto
• Application Number:
  US11/377,021
• Publication Number:
  US 20060209679A1
• Time in Patent Office: Days
• US Class Current: 370/216
• CPC Class Codes: H04B 10/032 using working and protection systems H04J14/0287 takes precedence
• CPC Class Codes: H04J 3/04 Distributors combined with modulators or demodulators pulse distributors in general H03K5/15; pulse counters H03K21/00 - H03K29/06; for telegraphy H04L5/22, H04L13/00 - H04L23/00, H04L25/45; for telephony H04Q11/04
• CPC Class Codes: H04J 3/0685 Clock or time synchronisation in a node; Intranode synchronisation
• CPC Class Codes: H04L 7/0008 Synchronisation information channels, e.g. clock distribution lines
• CPC Class Codes: H04Q 2213/1301 Optical transmission, optical switches
• CPC Class Codes: H04Q 2213/13036 Serial/parallel conversion, parallel bit transmission
• CPC Class Codes: H04Q 2213/13103 Memory

Abstract

In a transceiver having a plurality of ports, switching is determined on a port basis. A transceiver that is redundantly configured, has a plurality of interface ports, and implements serial communications of switching-control information for each interface port is characterized by including a switching-control circuit for creating the switching-control information items and implementing control so that the interface ports are switched, a parallel-to-serial conversion circuit for serial-converting the switching-control information items, and a serial-to-parallel conversion circuit for parallel-converting the switching-control information items that have been serial-converted.

Claims

1. A transceiver in a redundant configuration comprising a plurality of interface ports wherein serial communications of switching-control information for each interface port are established.

2. The transceiver according to claim 1, further comprising:

a switching-control section for creating the switching-control information and implementing control so that the interface ports are switched;

a serial conversion section for serial-converting the switching-control information; and

a parallel conversion section for parallel-converting the switching-control information that have been serial-converted.

3. The transceiver according to claim 2, wherein the serial conversion section creates a frame pulse and a clock pulse and implements parallel transmission of the switching-control information, the frame pulse, and the clock pulse.

4. The transceiver according to claim 3, wherein the transceiver implements the parallel transmission through a backboard.

5. An optical transmission system equipped with the transceiver according to any one of claims 1 to 4.

6. A port-based switching method in which faults at a plurality of interface ports are compared and determined from a standpoint of importance, and serial communications of switching-control information for each interface port are implemented, based on the comparison and determination.

7. The port-based switching method according to claim 6, wherein, in the serial communications, parallel transmission of the switching-control information, a frame pulse, and a clock pulse is implemented.

8. The port-based switching method according to claim 7, wherein the parallel transmission is implemented through a backboard.

9. A computer program product embodied on a computer-readable medium and comprising code that, when executed, causes a computer to perform the following:

comparing and determining from a standpoint of importance faults at a plurality of interface ports and

carrying out serial communication of switching-control information for each interface port, based on the comparison and determination.

10. The program according to claim 9 wherein in the serial communication, parallel transmission of the switching-control information, a frame pulse, and a clock pulse is performed.

11. The program according to claim 10 wherein the parallel transmission through a backboard is performed.

12. A storage medium in which the program according to any one of claims 9 to 11 is stored.