On-vehicle radio communication equipment, a dedicated short range communication system, and on-vehicle radio communication method

摘要

This invention provides a communication connection system for dedicated short range communications capable of successfully operating with respect to a service requiring high speed link connection in an on-vehicle equipment capable of receiving a plurality of services. If a reception side of an on-vehicle searches a plurality of radio frequencies corresponding to respective services in a certain repetition cycle, a search frequency of the radio frequency assigned to the service, such as an ETC service, requiring high speed link connection is set high and a search frequency of the radio frequency assigned to the service, such as a various information providing service or a parking lot management service, capable of being executed with low speed link connection is set low.