| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a priority data transfer method for performing retransmission processing at a time when packets collide on the basis of a packet priority degree. SOLUTION: When the collision of the packets with each other is detected in the case a transmission packet from a slave station 3C and a transmission packet from a relay station 2B are simultaneously transmitted to a relay station 2A, this priority data transfer method calculates the back off times of the colliding packets on the basis of the number of hops recorded in the number of hops recording fields of the colliding packets. Then, a probability of transmitting a packet without colliding with another packet in the case of performing retransmission becomes large so that a packet where the number of hops is large can preferentially be transmitted because the more the number of hops is, the shorter a back off time is set to be.</p> |
