Mobile communication system

• US 20060062573A1
• Filed: 09/06/2005
• Published: 03/23/2006
• Est. Priority Date: 09/07/2004
• Status: Active Grant

• Current Assignee: Yokogawa Electric Corporation
• Original Assignee: Yokogawa Electric Corporation
• Inventors: Miura, Akira, Uchida, Isao, Sato, Chie, Nagashima, Akira
• Granted Patent: US 7,698,039 B2
• Time in Patent Office: Days
• US Class Current: 398/5
• CPC Class Codes: H04B 10/032 using working and protection systems H04J14/0287 takes precedence

Abstract

The present invention makes improvements in a mobile communication system that performs a communication via a communication network provided in a mobile body to execute a data transfer. The present system comprises a plurality of nodes, a path control device which receives data from the nodes respectively, selects a path for the data transfer on the communication network, and outputs the data, first optical fibers which connect each of the nodes and the path control device and transfer the data, and second optical fibers provided in parallel with the first optical fibers. In the present system, the path control device communicates with the node via the second optical fiber when a failure occurs in the first optical fiber.

Claims

1. A mobile communication system which is provided in a mobile body and communicates via a communication network, said system comprising:

a plurality of nodes;

a path control device which receives data from the nodes respectively, selects a path for data transfer on the communication network, and outputs the data;

first optical fibers which connect each of the nodes and the path control device to transfer the data; and

second optical fibers which connect each of the nodes and the path control device, in parallel with the first optical fibers,

wherein the path control device communicates with the node via the second optical fiber when a failure occurs in the first optical fiber.

2. The mobile communication system as claimed in claim 1, wherein the node is any one of

a sensor,

a control unit which controls an equipment provided in the mobile body, and

a total-control device which performs a signal processing on information transmitted from at least one of the sensor and the control unit, and issues an instruction to the control unit.

3. The mobile communication system as claimed in claim 2, wherein

the sensor transmits the data to the total-control device and the predetermined control unit via the path control device, and

the predetermined control unit and the total-control device respectively process the data transmitted from the sensor independently.

4. The mobile communication system as claimed in claim 1, said system comprising:

a plurality of segment networks, each of the segment networks includes the plurality of nodes, the path control device, the first optical fibers, and the second optical fibers;

an upper layer path control device provided in an upper layer of the path control device;

third optical fibers which connect each of the path control devices and the upper layer path control device to transfer the data; and

fourth optical fibers which connect each of the path control devices and the upper layer path control device, in parallel with the third optical fibers,

wherein the upper layer path control device communicates with the path control device via the fourth optical fiber when a failure occurs in the third optical fiber.

5. The mobile communication system as claimed in claim 1, said mobile communication system further comprising:

a bit error correcting section which corrects a bit error, being provided in the path control device and the nodes respectively.

6. The mobile communication system as claimed in claim 5, wherein the path control device outputs a warning when a bit error rate exceeds a certain threshold value.