A communication apparatus includes a reception unit configured to receive a transmission message to be transmitted from a first application to a second application, a determination unit configured to determine whether the second application is present in the same area as the first application, an encoding unit configured to encode the transmission message if the second application is determined to be in an area different from the first application, and a transmission unit configured to transmit the transmission message from the first application to the second application, wherein an encoded transmission message is transmitted if the second application is determined to be present in an area different from the first application, and an un-encoded transmission message is transmitted if the second application is determined to be present in the same area as the first application.