| 摘要 |
<p>A communication system, a communication apparatus, a communication method and a program wherein the communication time can be shortened. An initiator, when performing a passive mode of communication, transmits a polling request frame in which a first value is set as time slot information. The initiator, when performing a simple mode of communication, transmits a polling request frame in which a second value, different from the first value, is set as the time slot information. When the time slot information, which is included in the polling request frame from the initiator, is the first value, a target transmits a polling response frame including an ID that identifies the target at the timing of a time slot decided by use of a random number. When the time slot information is the second value, the target transmits a polling response frame including real data at the timing of a predetermined time slot. The present invention can be applied to, for example, IC card systems performing proximity communication.</p> |
