Method of allocating slot for emergency data and method of transmitting for emergency data by using the same

PURPOSE: A method for providing an exclusive slot for urgent data is provided to use the allocated slot as a slot for one urgent data through an inter-node competition method. CONSTITUTION: A superframe includes a beacon interval showing the beginning of superframe, a CAP(Contention Access Period) transmitting a message data through contention and a CFP(Contention Free Period) transmitting a message data without contention. A slot for an urgent data is allocated in the superframe(110). The allotted information of a slot for urgent data is provided to nodes(120).