US 10,257,695 B2Granted

Wireless communication device and wireless communication method

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsOnur Altintas, Ryokichi Onishi, Mitsuhiro Nishibori

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Abstract

A wireless communication device capable of changing a communication parameter to be used according to a surrounding situation includes a learning database that stores, in association with each other, the surrounding situation of the wireless communication device and a communication performance in a case where communication is performed by using a given communication parameter, a plurality of sensors, surrounding situation determination unit configured to determine the surrounding situation of the wireless communication device from information obtained from the plurality of sensors, communication parameter candidate determination unit configured to refer to the learning database to determine candidates for the communication parameter that are appropriate in the determined surrounding situation, communication parameter determination unit configured to determine the communication parameter used in communication from among the candidates determined by the communication parameter candidate determination unit based on the requirement of the communication, and wireless communication unit configured to perform communication by using the communication parameter determined by the communication parameter determination unit. With this, it is possible to select an appropriate communication parameter according to the surrounding situation of the wireless communication device.

Claims7

Dependent claims

A wireless communication device that is associated with a vehicle and capable of changing a communication parameter to be used according to a surrounding situation, comprising:

surrounding situation determiner configured to determine a host surrounding situation of a host device based on a set of information;
communication partner surrounding situation acquirer configured to acquire a partner surrounding situation from a partner wireless communication device of a communication partner,
communication parameter determiner configured to determine candidates for the communication parameter that are appropriate in the host surrounding situation of the host device and the partner surrounding situation of the communication partner, and to determine the communication parameter for use in communication from among the candidates based on a requirement of the communications;
wireless communicator configured to perform communication by using the communication parameter determined by the communication parameter determiner;
and
a learning database that stores, in association with each other, a first surrounding situation of a first wireless communication device mounted on a first vehicle, a second surrounding situation of a second wireless communication device mounted on a second vehicle, a predetermined communication parameter determined by the communication parameter determiner, and a communication performance in communication performed between the first communication device and the second communication device by using the predetermined communication parameter,
wherein the communication parameter candidate determiner determines the candidates for one or a plurality of the communication parameters for each of a transport layer, a network layer, a data link layer, and a physical layer, the one or a plurality of the communication parameters including modulation level, and the candidates for a communication parameter of modulation level include a set of modulation levels from which the highest modulation level is excluded.

4 more elements

A wireless communication method capable of changing a communication parameter to be used according to a surrounding situation, comprising:

a surrounding situation determination step of determining a host surrounding situation of a host device by categorizing the surrounding situation;
a communication partner surrounding situation acquisition step of acquiring a partner surrounding situation from a partner wireless communication device of a communication partner;
a communication parameter determination step of determining the communication parameter for use in communication from among candidates based on a requirement of the communication;
and
a wireless communication step of performing communication by using the communication parameter determined in the communication parameter determination step,
wherein the method further comprises referring to a learning database that stores, in association with each other, a first surrounding situation of a first wireless communication device mounted on a first vehicle, a second surrounding situation of a second wireless communication device mounted on a second vehicle, a predetermined communication parameter determined in the communication parameter determination step, and a communication performance in communication performed between the first communication device and the second communication device by using the predetermined communication parameter,
wherein the host surrounding situation includes at least one of:
a speed of a host vehicle, an acceleration of the host vehicle, or a number of vehicles surrounding the host vehicle, and
wherein candidates for one or a plurality of the communication parameters are determined for each of a transport layer, a network layer, a data link layer, and a physical layer, the one or a plurality of the communication parameters including modulation level, and the candidates for a communication parameter of modulation level include a set of modulation levels from which the highest modulation level is excluded.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/965,258Filed 27 Apr 2018 · continuation
Priority: JP 2011-18775330 Aug 2011
Published: US 2018/0249323 A130 Aug 2018
Granted: 9 Apr 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H04W 4/40
Services specially adapted for particular environments, situations or purposes: for vehicles, e.g. vehicle-to-pedestrians [V2P]
G06F 16/00
Information retrieval
H04W 4/00
Services specially adapted for wireless communication networks
H04W 4/46
For vehicles, e.g. vehicle-to-pedestrians [V2P]: for vehicle-to-vehicle communication [V2V]

Family

PCT/JP2012/071847Parent of this continuation · filed 29 Aug 2012
US 2018/0249323 A1Pre-grant publication · published 30 Aug 2018
Application14/241,787Parent of this continuation
US 9,986,422 B2Parent of this continuation
US 2014/0213241 A1Published application
US 10,257,695 B2This patent

From the US filing history. Foreign family members aren’t listed.