Patent ID: 7110752

Claim:
A radio communication method of communication between two mobile stations, comprising the steps of: mutually exchanging information between said two mobile stations about one or more radio communication methods with which each mobile station is equipped as software by communicating according to a first radio communication method defined beforehand; selecting a second radio communication method suitable for a communication application to be used for communication between said two mobile stations from among the one or more radio communication methods with which at least one of the two mobile stations is equipped; identifying, based on the exchanged information about the one or more radio communication methods, one of the two mobile stations that is not equipped with software of the second radio communication method, wherein which one of the two mobile stations is identified as a result of said identifying step varies in response to the exchanged information about the one or more radio communication methods; transmitting software of the second radio communication method to said one of the two mobile stations identified by said identifying step from another one of the two mobile stations according to said first radio communication method; and conducting communications between said two mobile stations by the communication application according to said second radio communication method based on said software.