Patent ID: 8300576

Claim:
A communication method of a base station radio apparatus for communicating with a mobile radio apparatus, the communication method comprising: registering the mobile radio apparatus with the base station radio apparatus by: a) establishing communication between the base station radio apparatus and the mobile radio apparatus using a first communication mode implementing a first data format; b) transmitting identifying information and function information from the mobile radio apparatus to the base station radio apparatus, the identifying information identifying the mobile radio apparatus, and the function information indicating whether or not the mobile radio apparatus supports a second communication mode implementing a second data format; and c) storing and associating in the base station radio apparatus, both the identifying information of the mobile radio apparatus and the respective function information of the mobile radio apparatus; the base station radio apparatus identifying and communicating with the mobile radio apparatus after registration steps a-c by: d) receiving, by the base station radio apparatus, the identifying information of the mobile radio apparatus by using the first communication mode; e) selecting, by the base station radio apparatus, the second communication mode based on the stored function information associated with the identifying information when: the identifying information received in said receiving step d) and the identifying information stored in said storing step c) are identical, and the stored function information indicates that the mobile radio apparatus supports the second communication mode; f) selecting, by the base station radio apparatus, the first communication mode when: the identifying information received in said receiving step d) and the identifying information stored in said storing step c) are identical, and the stored function information indicates that the mobile radio apparatus does not support the second communication mode, or the identifying information received in said receiving step d) and the identifying information stored in said storing step c) are different; and g) communicating, between the base station radio apparatus and the mobile radio apparatus using the selected communication mode.