On-Vehicle Communication Apparatus and Method

• US 20090009307A1
• Filed: 03/02/2006
• Published: 01/08/2009
• Est. Priority Date: 04/08/2005
• Status: Abandoned Application

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Yamane, Masao, Fujita, Susumu, Takagi, Toru
• Application Number:
  US11/887,959
• Publication Number:
  US 20090009307A1
• Time in Patent Office: Days
• US Class Current: 340/438
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00

Abstract

An on-vehicle communication apparatus provided with: endpoint radio communication devices each provided for each one or more on-vehicle units; gateway radio communication devices which are respectively arranged in function networks provided with the above-mentioned one or more on-vehicle units, and performs radio communications with the endpoint radio communication devices that are included in the function network; and power sources each provided for any one of the above-mentioned one or more on-vehicle units and the above-mentioned one or more function networks.

Claims

1. An on-vehicle communication apparatus comprising:

an endpoint radio communication device provided for each one or more on-vehicle units;

a gateway radio communication device which is arranged in each of function networks each provided with the one or more on-vehicle units, and which performs radio communications with the endpoint radio communication devices that are included in each of the function networks; and

a power source provided for any one of the one or more on-vehicle units and the one or more function networks.

2. The on-vehicle communication apparatus according to claim 1, wherein communication of a control signal of each of the on-vehicle units is performed between corresponding one of the gateway radio communication device, and the corresponding one of the endpoint radio communication devices in each function network which is provided with the one of the on-vehicle units.

3. The on-vehicle communication apparatus according to claim 1, further comprising a vehicle monitoring apparatus which performs radio communications with the gateway radio communication devices, and which monitors at least any one of:

the entirety of the power sources; and

radio communication among the on-vehicle units, the gateway radio communication devices and the endpoint radio communication devices.

4. The on-vehicle communication apparatus according to claim 1, wherein, in each of the function networks, priority is given to communications of one of the on-vehicle units that is configured to feed back, in response to an operation of a user, operational status thereof to the user.

5. The on-vehicle communication apparatus according to claim 1, wherein, in each of the function networks, an interval of communications between the gateway radio communication device and each of the corresponding endpoint radio communication devices has been set as long as possible on the basis of a prescribed time period from start of operations to end thereof.

6. The on-vehicle communication apparatus according to claim 1, wherein, in each of the function networks, when those of the on-vehicle units that have been in advance registered as a group are operating, the endpoint radio communication devices of the other on-vehicle units are not allowed to operate.

7. The on-vehicle communication apparatus according to claim 1, wherein the power source for any one of the endpoint radio communication devices and the on-vehicle units is changed between on and off states in accordance with a traveling status of a vehicle on which the on-vehicle communication apparatus is mounted.

8. The on-vehicle communication apparatus according to claim 1, wherein a communication interval, between the gateway radio communication devices and the corresponding endpoint radio communication devices, is controlled in accordance with a traveling status of a vehicle on which the on-vehicle communication apparatus is mounted.

9. The on-vehicle communication apparatus according to claim 8, wherein the communication interval is controlled on the basis of a traveling speed of the subject vehicle, a shift position thereof, and a road type.

10. A communication method comprising:

providing an endpoint radio communication device for each one or more on-vehicle units;

arranging, in each of function networks each provided with the one or more on-vehicle units, a gateway radio communication device which performs radio communications with the endpoint radio communication devices that are included in each of the function networks; and

providing a power source for the one or more on-vehicle units and the one or more function networks.