Packet transmission apparatus and method for node on the wireless sensor networks

The packet transmission apparatus and method for a node in a wireless sensor network is provided. The apparatus includes a plurality of priority queues, and stores the packet to be transmitted to the neighboring nodes in each of the priority queues according to priority, and sending a first packet according to the priority of each priority queue. According to the invention, using priority queues in the node, minimizing the delay of a packet that requires real-time. Wireless sensor networks (sensor networks), priority queue (priority queue), MAC (Media Access Control)