Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Teruko Fujii

Takashi Asahara

Takeshi Suehiro

Shusaku Umeda

Mari Ochiai

Masaaki Takeyasu

Yoshimasa Baba

Masataka Kato

Yasuyuki Nagashima

Kazuhiro Watanabe

Akinori Taira

Kenichi Nakura

Takenori Sumi

Takahisa Yamauchi

Akiko Iwasaki

Yosuke Yokoyama

Yoshihiro Otsuka

Tetsuo Sadakane

Kyohei Migita

Hitomi Yoshimura

A communication resource allocation device () identifies a hazardous behavior that may cause a traffic accident and has occurred in each of monitoring target areas included in a communication area of a base station () in a past reference period, so as to determine a hazard level for each of the monitoring target areas. The communication resource allocation device () allocates communication resources to each of the monitoring target areas based on the determined hazard level. The communication resource allocation device () distributes information to a roadside device () and an in-vehicle device () in each of the monitoring target areas, using the allocated communication resources.

Communication resource allocation device, communication resource allocation method, and computer readable medium

A server device includes a support information generation unit, a condition determination unit, and a resource calculation unit. The support information generation unit generates support information for each support-provided area using information from a communication terminal. The condition determination unit determines a support information generation condition being a condition concerning the support information to be generated by the support information generation unit, based on area situation information representing a situation thereof. The resource calculation unit calculates, based on the support information generation condition, amounts of calculation resource and amounts of communication resource of each support-provided area not to cause a sum of the amounts of calculation resource required in each support-provided area and a sum of the amounts of communication resource for use between the server device and a mobile terminal, to exceed total calculation/communication resource upper limit values available in all the support-provided areas.

Server device, control circuit, storage medium, and traffic support method

A communication management device () estimates communication quality between a control device () mounted on a moving object () and a driving assistance device () to provide a driving assistance service for the control device (), at a scheduled time when the moving object () passes through a communication area, which includes a scheduled path where the moving object () passes. The communication management device () notifies the driving assistance device () when the communication quality is outside a range of quality being a standard. When it is notified, the driving assistance device () changes the driving assistance service to be provided for the control device ().

Communication management device, communication management method, driving support device, driving support method and computer readable medium

A virtual map generation unit () generates a virtual map of a subjected area by dividing the subjected area into role areas each of which corresponds to each of a plurality of roles, based on the number of vehicles scheduled to travel in the subjected area specified from work plan information on a transportation work of loads by a vehicle and based on the number of loads scheduled to be placed in the subjected area specified from the work plan information. A distribution unit () distributes to the vehicle traveling in the subjected area, the virtual map generated by the virtual map generation unit ().

Traffic management apparatus, traffic management method, and computer readable medium

The information transmission control device according to the present disclosure is for controlling a position to start transmitting probe data to a server; the information transmission control device uses a vehicle's current lane segment information and history information about the vehicle's having transmitted probe data, to set a transmission interval distance and an offset for changing a position to start transmitting probe data. By using the transmission interval distances and the offsets, transmission start positions to transmit probe data are shifted on a running unit basis or on a vehicle basis. Therefore, while the vehicle stops, multiple data transmission at the same position does not occur. This can reduce the communication cost, and makes it possible to obtain information evenly on the travel route.

Information transmission control device, server, and information transmission control system

A communication apparatus determines a transmission mode to specify a priority order of a plurality of types of vehicle information for each traveling section, based on each transmission speed in one or more traveling sections. The communication apparatus selects a transmission mode at a position where a vehicle is traveling, from among transmission modes in each traveling section. The communication apparatus transmits the plurality of types of vehicle information in accordance with the priority order specified in the selected transmission mode.

Communication apparatus and computer readable medium

A communication apparatusis provided with a first communication interface, second communication interfacesconnected to a plurality of access routersconnected to an Internet, and a route determination unit which, for a packet being communicated from the first communication interfaceto the second communication interfaces, determines the second communication interfacein accordance with an elapsed time since connecting start of a connection with a destination of the packet. Connections having started within a predetermined time are treated as connections constituting one user session. Therefore, connections constituting the same user session can be communicated via the same access router without the need of analyzing a protocol of a layer.

Communication apparatus and communication method

Respective nodes Nto Nonly detect a carrier, and the node Nsets a random time between a time after a certain period of time tand a time until a certain period of time tafter the carrier of data Dis gone as a waiting time so as to transmit data within this waiting time. The node Ntransmits ACK data Dwith respect to the data Dto the node Nbefore the certain period of time tafter the carrier of the data Dis gone. The node Ndetects the carrier of the ACK data Dand again sets a random time after the certain period of time tuntil the certain period of time tto transmit the data.

Communication system, communication device, and communication method

Nodes (Nto N) include MTU length calculation sections (to) which multiply baud rates (Dto D) of communication parameters (Dto D) set based on results of negotiation with other nodes (Nto N) by a communication regulated time used in timer control for transmission/reception, and which calculate MTU lengths as maximum packet lengths of the packets based on the multiplication results so that transmission times of the packets for the destination nodes are equal to each other, and also include communication control sections (to) which divide data to be transmitted to destination nodes into packets having the calculated MTU length to transmit the packets.

Communication system and communication method

To obtain a remote authentication system that securely authenticates with protecting biometrics information, which is user's personal information, and is firm on security when performing authentication of a person with the biometrics information, and a remote authentication method. The present invention encrypts biometrics information that is user's personal information, and transfers the biometrics information over a network in such a state that only an authentication server, which the user assigns, can decode the biometrics information. Therefore, it is possible to securely protect user's privacy that is the biometrics information in a style of reflecting user's intention, and to prevent reuse of invalid authentication information since it is possible to confirm the date and time, when the authentication information was generated, by the authentication server. Furthermore, it is possible to keep the security of a system firm since an authenticated side can confirm whether the user is authenticated.

Growing community of inventors

Tokyo, Japan

Teruko Fujii