Effective Hidden Node Collision Recover Method for Low Rate Wireless Personal Area Network

摘要

The invention itself node when the hidden node collision occurs at low speed wireless private network (LR-WPAN) small capable of performing the fast network recovery to control overhead, a method for recovering the hidden node collision at low speed wireless private network. ; the network configuration of the MAC protocol of the IEEE 802.15.4 standard, the low price There is no mechanism for avoiding the hidden node collisions. But the real IEEE 802.15.4 standard is therefore a continuous conflict arose between the hidden nodes with high probability less network efficiency. ; The present invention includes a central control device (Coordinator) sends a group Polling ACK (PACK) By giving to other nodes conflict set the priority for the retransmission takes place between devices allows aware of network reconfiguration period. After the central control device is hidden node collision can increase the network efficiency by adjusting the schedule for the retransmitted packet I woke up.