Method for media access control on semi-linear sensor network

Half of the present invention the linear sensor networks transmitting sensor node, the long preamble element preamble and repeatedly transmitted that includes the (remaining length of the destination address, a preamble, a data length, the collision acts upon eliminated), the receiving sensor node is transmitting sensor a chamber temporality by providing their duty cycle information, the ACK to a node, check the received data, each sensor node to predict that participate in data transfer through the system to control so that each sensor node can operate without idle time accordingly and to meet. That is, the half of the Invention - The medium access control method of the linear sensor network can minimize the sleep delay on the transmission path and reduce the addition of energy and the transmission time consumed in accordance with the collision, information about the duty cycle in a direction opposite to the transmission path it passes through the sensor network can be dynamically applied to change the number of the preamble, transmission timing, etc., it is possible to increase energy efficiency by reducing the transmission of unnecessary long preamble through it. Further, by informing the conflict to the transmission path onto the sensor node through the transmission of the collision detection information, it is possible to provide reliability in a wide range of collisions that may occur in a real sensor networks. Medium access control, semi-linear structure, sensor networks, low-power, real-time, reliability and collision