| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a probability of packet collision caused by movement of a communication terminal device. <P>SOLUTION: A slot allocation unit 17 allocates each of a plurality of slots by associating them with a plurality of directions. An own terminal travelling direction detection unit 18 detects the travelling direction of the own terminal. A slot selection unit 20 selects a slot which is completely free from slots allocated, by the slot allocation unit 17, in the direction corresponding to the own terminal travelling direction detected by the own terminal travelling direction detection unit 18 based on own terminal frame information generated by a frame information generation unit 15 and other terminal frame information included in a received packet, and transmits a packet including the generated own terminal frame information at timing of the selected slot. <P>COPYRIGHT: (C)2012,JPO&INPIT |
