| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a communication system, etc. for sharing a table in which antenna directivity to be adopted in communication between a plurality of terminal is appropriately registered by the respective terminals. <P>SOLUTION: A terminal 101 of the communication system such as Piconet operates as a PNC or a DEV, uses a directional antenna 102 with k ways of directivity, a beacon transmitting part 111 of the PNC transmits k super frames with the i-th directivity in a beacon section of the i-th super frame, a beacon receiving part 121 of the DEV tries reception of beacons by switching the directivity by the time length obtained by dividing beacon sections into k, when the beacons are received by the j-th directivity, a directivity notification part 122 transmits the beacons to the PNC, in the PNC, a directivity acquisition part 112 receives them with the i-th super frame, the PNC considers i, j as the respective directivity used for communication between two terminals 101, generates a table and shares it by transmitting it to the DEV. <P>COPYRIGHT: (C)2008,JPO&INPIT |
