Model Each node works per round synchronized by a global clock (like GPS) The initial information of each node ID of itself Whether it is source or not(RB and ARB) Each node cannot receive two or more messages in one round Collision detection is not availableModel • Each node works per round synchronized by a global clock (like GPS). • The initial information of each node – ID of itself – Whether it is source or not (RB and ARB) • Each node cannot receive two or more messages in one round • Collision detection is not available