ON-VEHICLE TERMINAL DEVICE, PEDESTRIAN TERMINAL DEVICE, PEDESTRIAN-VEHICLE COMMUNICATION SYSTEM, AND PEDESTRIAN-VEHICLE COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To achieve power saving in a pedestrian terminal device and to reduce congestion of communication by reducing traffic of communication between a pedestrian terminal device and an on-vehicle terminal device.SOLUTION: An on-vehicle terminal device includes: a pedestrian-vehicle communication section 32 for performing pedestrian-vehicle communication; a low-power communication section 33 performing low-power communication; and a communication control section 41 performing switching between two operation modes of a normal mode and a representative terminal mode. In a normal mode, the on-vehicle terminal device mutually exchanges pedestrian information and vehicle information between itself and a pedestrian terminal device 1 by pedestrian-vehicle communication. In a representative terminal mode, the on-vehicle terminal device obtains the pedestrian information from the pedestrian terminal device by low-power communication as the representative terminal of the pedestrian terminal devices existing in the circumference of a self device, provides the pedestrian information to another on-vehicle terminal device, and also provides vehicle information obtained from the other on-vehicle terminal device to the pedestrian terminal device by small-power communication.SELECTED DRAWING: Figure 3