摘要
CSMA/CA协议在几个终端选择相同的退避时间窗的时候,会导致系统间碰撞。文章提出了一种新的退避机制来避免系统间碰撞。在发生系统碰撞的时刻上,根据不同设备的通信的优先级,将其退避时间提前或是推迟一个小于一个时隙的时间偏移量,以避免系统冲突。通过仿真分析表明,与原有方案相比,本方案可以有效避免系统冲突,提高系统容量。
When some terminals select the same retreat time window,CSMA/CA can cause serious collision between them.Therefore,this paper proposed a new retreat mechanism to avoid collision in systems.On the moment of collision,according to the priority of different communication equipments,it will extend or reduce the retreat time window by less than a time slot to avoid conflict.The simulation results show that this scheme can effectively avoid collision and improve the system capacity compared with the original scheme.
出处
《电子设计工程》
2014年第5期89-91,共3页
Electronic Design Engineering
基金
国家自然科学基金(61001068)
