Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Godo Kaisha IP Bridge 1

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Holdings Corporation

Max Co., Ltd.

Matsushita Electrical Industrial Co., Ltd.

Panasonic Corperation

Hiroaki Sudo

Mitsuru Uesugi

Tsuyoshi Ueno

Kazunori Inogai

Fujio Sasaki

Gen-ichiro Ohta

Shintaro Muramatsu

Katsuhiko Hiramatsu

Kimihiko Ishikawa

Yoshimasa Shirasaki

Yoshiyuki Okubo

Yoshimasa Shirosaki

Satoshi Tanaka

Takashi Aramaki

Atsushi Sumasu

Yoichi Nakagawa

Masao Saito

Yusuke Asai

Takatoshi Sugiyama

Makoto Yasugi

Yasunori Kudo

Takayuki Ehara

Kazumasa Gomyo

Jun Ishida

Masahito Sugahara

Koichi Aihara

Provided is a system which can reduce load on a travel controller that performs a danger avoidance operation by preliminarily detecting a significant event without increasing an amount of ITS communications, thereby providing suitable assistance for travel control of autonomous vehicles. When a vehiclepasses through a certain section of a road after an in-vehicle terminalhas detected a significant event while the vehicleis traveling in the section, the in-vehicle terminaltransmits event data (images and other information related to the event) to a roadside apparatusat an end point of the section. The roadside apparatustransmits the event data to another roadside apparatusat a start point of the section, which in turn transmits the event data to an in-vehicle device in another vehicle entering the section so that the device can perform travel control based on the event data.

Travel assistance method, road captured image collection method, and roadside device

A system for guiding an autonomous vehicle to a target location includes a pedestrian terminal carried by a user of the vehicle; an in-vehicle terminal mounted in the vehicle; and a wearable terminal worn on the user's body to detect a sight focusing status of the user. The pedestrian terminal is configured to transmit and receive information to and from the in-vehicle terminal, determine if there is a risk of collision between the vehicle and the user, and provide an alert to the pedestrian. The in-vehicle terminal is configured to transmit and receive information to and from the pedestrian terminal, determine if there is a risk of collision between the vehicle and the user based on the information received from the pedestrian terminal, and cause an autonomous driving ECU to perform cruise control so as to avoid the collision.

Pedestrian device, vehicle-mounted device, mobile body guidance system, and mobile body guidance method

A wireless communication device that supports a first wireless communication system and belongs to a first network to perform relay operation therein, the device including: a reception unit that receives first notification information from downstream side of the wireless communication device; an interference classification unit that classifies interference detected in a plurality of channels into first interference of the wireless communication device that supports a first wireless communication system and belongs to a first network or second interference that is different from the first interference; a control unit that generates second notification information including at least one of information on the first interference and information on the second interference on the basis of the first notification information and the interference classification result; and a transmission unit that transmits the second information to the upstream side.

Wireless communication device and notification method

The object of the present invention is to enable presentation of information on a target object (vehicle) located on a road to a pedestrian at an appropriate time and such that the information includes appropriate information for the pedestrian's statues. A pedestrian device transmits position data of a pedestrian to an in-vehicle device, which determines whether or not the pedestrian approaches a vehicle based on the position data. When determining that the pedestrian approaches the vehicle, the in-vehicle device transmits guidance direction information to the pedestrian device. The pedestrian device performs control based on the guidance direction information so as to guide the pedestrian to look toward the vehicle, and the pedestrian device acquires sight status information of the pedestrian from a wearable terminal and transmits the sight status information to the in-vehicle terminal. Then, the in-vehicle terminal determines whether or not the pedestrian sees the vehicle. When determining that the pedestrian does not see the vehicle, the in-vehicle terminal transmit alert information to the pedestrian terminal, and the pedestrian terminal performs control based on the alert information so as to provide an alert to the pedestrian.

Pedestrian device, communication device, and information distribution method

A terminal device includes: a pedestrian-to-vehicle communication device configured to communicate with an in-vehicle terminal by using a first communication method, in which direct communication is performed as pedestrian-to-vehicle communication; a wireless LAN communication device configured to communicate with the in-vehicle terminal by using a second communication method, in which indirect communication is performed via a roadside device disposed on or near a road; and a controller configured to determine whether or not the terminal device is in a risky state based on state information indicating a state of the terminal device, and select either one of the first communication method, in which direct communication is used and the second communication method, in which indirect communication is used, based on a result of the determination.

Terminal device, roadside device, communications system, and communications method

A pedestrian terminal transmits a message including pedestrian information to a roadside machine. In a case where the message transmitted from the pedestrian terminal is received, the roadside machine accumulates the pedestrian information included in the message as passage history information, detects occurrence of an abnormal event for a person possessing the pedestrian terminal based on the passage history information, and transmits the message including information indicating that the abnormal event occurs for the person possessing the pedestrian terminal to a nearby pedestrian terminal.

Roadside device, pedestrian device, communication system, abnormality detection method, and abnormality communication method

A pedestrian terminal device receives pedestrian information transmitted from another pedestrian terminal device which is present in the vicinity of the pedestrian terminal device. A location of the pedestrian terminal device is acquired, and it is determined whether or not a pedestrian who carries the pedestrian terminal device is located inside a pedestrian group based on the location of the pedestrian terminal device and a location of the other pedestrian terminal device included in the pedestrian information. When the pedestrian is located inside the pedestrian group, pedestrian-vehicle communication is stopped.

Pedestrian terminal device, vehicle-mounted terminal device, pedestrian-to-vehicle communication control device, pedestrian-to-vehicle communication system, and pedestrian-to-vehicle communication method

A controller is provided that controls a plurality of base stations, each configured to communicate with a mobile station, using some carrier frequencies of a frequency band shared with another system. The controller includes a receiver that receives first frequency information from a first base station in communication with the mobile station, and second frequency information from a second base station, the second base station being a handover destination. The controller also includes a frequency selector that selects a carrier frequency for systematic-bit mapping and a carrier frequency for parity-bit mapping based on the first frequency information and the second frequency information. The controller further includes a signal-assignment-information generator that generates signal assignment information, indicating the carrier frequency for systematic-bit mapping and the carrier frequency for parity-bit mapping, and a transmitter that transmits the signal assignment information to the first and the second base stations.

Base station, controller, communication system, and interference avoidance method

In order to enable a driver in driving a vehicle to quickly and assuredly recognize a pedestrian having a collision risk with the vehicle even when it is difficult for the driver to recognize the pedestrian by eyes, such as during night time, an in-vehicle terminal device is configured to: determine a collision risk based on pedestrian position information and vehicle position information; generate turn-on instruction information which, when the pedestrian is determined to have the collision risk with the vehicle, causes an indicator light carried by the pedestrian to be turned on in a prescribed light color; and transmit the turn-on instruction information to a pedestrian terminal device via pedestrian-vehicle communication, and wherein the pedestrian terminal device is configured to: receive the turn-on instruction information transmitted from the in-vehicle terminal device; and turn on the indicator light based on the turn-on instruction information.

Pedestrian-vehicle communication system, in-vehicle terminal device, pedestrian terminal device and safe-driving assistance method

The base station performs radio communication of a time-division-duplex scheme with a terminal apparatus, using any of a plurality of channels included in each of a plurality of frequency bands, and includes: a channel selector that selects a plurality of use channels to be used for the radio communication; a transmitter that transmits a downlink signal to the terminal apparatus; and a receiver that receives an uplink signal from the terminal apparatus. The transmitter transmits, using at least one of the plurality of use channels, the downlink signal in a transmission interval of the downlink signal, and the receiver receives the uplink signal in the transmission interval of the downlink signal, using another one of the plurality of use channels that is not adjacent to the at least one of the use channels.

Base station, terminal apparatus, radio communication system, and communication method

Pedestrian terminal device that can save power consumption. The pedestrian terminal device carried by a pedestrian is provided with an operation mode selector for selecting one of a principal terminal operation mode wherein a pedestrian-vehicle communication with an in-vehicle terminal device is performed representing other pedestrian terminal devices, and an in-group terminal operation mode wherein a short-range wireless communication of a shorter range and a smaller power output than the pedestrian-vehicle communication is performed with another pedestrian terminal device operating in the principal terminal operation mode. Because the pedestrian terminal device in which the principal terminal operation mode is selected communicates with other pedestrian terminal devices operating in the in-group terminal operation mode via the short-range wireless communication of a shorter-range and a smaller power output than the pedestrian-vehicle communication, the power consumption of the pedestrian terminal device can be saved.

Pedestrian-vehicle communication system

An object is to suppress a decrease in communication quality and improve the communication quality even when interference is present in some of a frequency band in use in a case where a turbo coding scheme is combined with multicarrier communication using some of a frequency band shared with another system. A frequency selector () selects a band not used by another system, based on a measurement value of a reception level, then selects a subband for systematic-bit mapping from among subbands having a measurement value of the reception level lower than a threshold, and selects a subband for parity-bit mapping from among subbands other than the subband for systematic-bit mapping, for each subband (carrier frequency) of the selected band. A carrier-mapper () maps a systematic bit and parity bit to each subband based on the result of selection by the frequency selector ().

A base station is provided that performs time-division duplex radio communication with a terminal, using part of a frequency band shared with another system. The base station includes a receiver that receives an uplink signal from the terminal for each frequency band in use, and a guard-time-length setter that sets a length of a guard time. The base station also includes a reception level measurer, which measures a reception level of the uplink signal and a reception level of the guard time having a predetermined length, and a frequency band selector, which selects a frequency band in which the reception level of the guard time is not greater than a first threshold. The base station further includes a control signal generator that generates a control signal, and a transmitter that transmits a downlink signal, including the control signal, to the terminal for the frequency band in use.

Base station

An OFDM signal transmission apparatus is provided, which includes a mapping unit configured to map first signals into N subcarriers and second signals into M subcarrier(s) to form an OFDM signal, wherein N is larger than M. The first signals are each indicating a same bit of retransmission information and the second signals are each indicating a same bit of information other than retransmission information. The OFDM signal transmission apparatus further includes a transmitting unit configured to transmit the formed OFDM signal.

OFDM-CDMA equipment and method

A terminal apparatus, a radio communication system and a communication method are provided each capable of transmitting feedback information indicating a reception result of a DL signal to a base station without reducing the efficiency of transmitting a UL signal. The terminal apparatus includes an error detector that detects the presence or absence of an error in a downlink signal transmitted from the base station apparatus, a configurator that configures a different preamble depending on whether or not there is an error in the downlink signal and a transmitter that transmits an uplink signal including the configured preamble.

Growing community of inventors

Yokohama, Japan

Hiroaki Sudo