ONBOARD WIRELESS COMMUNICATION APPARATUS AND WIRELESS SET

• US 20150208364A1
• Filed: 10/05/2012
• Published: 07/23/2015
• Est. Priority Date: 10/05/2012
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Fukuhara, Hideki, Mitsui, Takeshi, Nakai, Yoshihiro, Yokota, Hiroyuki
• Granted Patent: US 9,686,754 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 4/48 for in-vehicle communication
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/245 taking into account received signal strength
• CPC Class Codes: H04W 52/28 using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
• CPC Class Codes: H04W 52/383 power control in peer-to-peer links
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 76/11 Allocation or use of connection identifiers
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

An onboard wireless communication apparatus 10 includes an in-vehicle informing processor that transmits information that enables a wireless set 20 to recognize that it is located inside a vehicle 100 to the wireless set 20 which is about to carry out wireless communication with a first wireless communication apparatus 11a serving as a communication partner, and which controls, when the wireless set 20 recognizes that it is located inside the vehicle 100, its transmit power in a manner preventing an excessive receiving power level of a second communication apparatus 11b that is carrying out, besides the first wireless communication apparatus 11a, wireless communication inside the vehicle 100 by a wireless communication technique using the same frequency band as the first wireless communication apparatus 11a.

Claims

1. An onboard wireless communication apparatus which is installed inside a vehicle and includes a first wireless communication apparatus that carries out wireless communication, the onboard wireless communication apparatus comprising:

an in-vehicle informing processor that sends information that enables a wireless set to recognize that the wireless set is located inside the vehicle to the wireless set which is about to carry out wireless communication with the first wireless communication apparatus serving as a communication partner, and which controls, when the wireless set recognizes that it is located inside the vehicle, its transmit power in a manner avoiding an excessive receiving power level of a second communication apparatus that is carrying out, besides the first wireless communication apparatus, wireless communication inside the vehicle by a wireless communication technique using the same frequency band as the first wireless communication apparatus.

2. The onboard wireless communication apparatus according to claim 1, wherein

the in-vehicle informing processor is the first wireless communication apparatus;

and

the information that enables the wireless set to recognize that the wireless set is located inside the vehicle is information about a communication connection ID which is sent from the first wireless communication apparatus to the wireless set to establish wireless communication with the wireless set and which is formed by incorporating information about the vehicle the wireless set can recognize into the communication connection ID.

3. The onboard wireless communication apparatus according to claim 1, wherein

the in-vehicle informing processor is a charging processor that transmits charging power to the wireless set;

and

the information that enables the wireless set to recognize that the wireless set is located inside the vehicle is information which is formed by incorporating information about the vehicle the wireless set can recognize into information the charging processor sends to the wireless set to transmit the charging power to the wireless set.

4. The onboard wireless communication apparatus according to claim 1, wherein

the in-vehicle informing processor is an authentication processor that executes authentication processing of the wireless set;

and

the information that enables the wireless set to recognize that the wireless set is located inside the vehicle is information which is formed by incorporating information about the vehicle the wireless set can recognize into information the authentication processor sends to the wireless set to authenticate the wireless set.

5. The onboard wireless communication apparatus according to claim 1, further comprising:

controller that decides, when the first wireless communication apparatus is about to carry out wireless communication with the wireless set serving as a communication partner, on whether the second wireless communication apparatus other than the first wireless communication apparatus is carrying out wireless communication inside the vehicle or not, wherein the in-vehicle informing processor;

instructs, when the controller decides that the wireless communication is being carried out, the wireless set serving as the communication partner to control its transmit power; and

instructs, when the controller does not decide that the wireless communication is being carried out, the wireless set serving as the communication partner not to control the transmit power.

6. The onboard wireless communication apparatus according to claim 1:

wherein the controller decides a transmit power level that enables avoiding an excessive received power level of the second wireless communication apparatus according to a radio environment of the frequency band the first wireless communication apparatus uses, the second wireless communication apparatus carrying out wireless communication besides the first wireless communication apparatus, and

wherein the in-vehicle informing processor sends the transmit power level the controller decides to the wireless set serving as a communication partner.

7. A wireless set that carries out wireless communication with a first wireless communication apparatus included in an onboard wireless communication apparatus installed inside a vehicle, the wireless set comprising:

recognizer that recognizes that the wireless set is located inside the vehicle from information sent from the onboard wireless communication apparatus; and

a transmit power controller that controls, when the recognizer recognizes that the wireless set is located inside the vehicle, transmit power of the wireless set in a manner that enables avoiding an excessive received power level of a second wireless communication apparatus which is carrying out in-vehicle wireless communication besides the first wireless communication apparatus serving as a communication partner, and which employs a wireless communication technique using the same frequency band as the first wireless communication apparatus.

8. A wireless set that carries out wireless communication with a first wireless communication apparatus included in an onboard wireless communication apparatus installed inside a vehicle, the wireless set comprising:

an in-vehicle deciding unit that decides on whether the wireless set is located inside the vehicle or not; and

a transmit power controller that controls, when the in-vehicle deciding unit decides that the wireless set is located inside the vehicle, transmit power in a manner that enables avoiding an excessive received power level of a second wireless communication apparatus which is carrying out in-vehicle wireless communication besides the first wireless communication apparatus serving as a communication partner, and which employs a wireless communication technique using the same frequency band as the first wireless communication apparatus.

9. The wireless set according to claim 8, wherein the in-vehicle deciding unit:

comprises a user interface that receives information indicating whether the wireless set is located inside the vehicle or not from a user when the wireless set is about to carry out wireless communication with the onboard wireless communication apparatus; and

decides from the information the user interface receives on whether the wireless set is located inside the vehicle or not.

10. The wireless set according to claim 8, wherein the in-vehicle deciding unit:

comprises a camera that takes a surrounding image when the wireless set is about to carry out wireless communication with the onboard wireless communication apparatus;

comprises an image recognition engine that carries out image recognition of an in-vehicle state from the image the camera takes; and

decides on whether the wireless set is located inside the vehicle or not according to whether the image recognition engine carries out image recognition of the in-vehicle state or not.

11. The wireless set according to claim 8, wherein the in-vehicle deciding unit:

comprises a motion detector that detects motion information indicating movement of a user carrying the wireless set; and

decides on whether the wireless set is located inside the vehicle or not from whether the motion information the motion detector detects matches to a movement of the user inside the vehicle.