摘要
针对单一信道下可用资源的分配问题,提出了基于碰撞识别的优先级仲裁策略,在研究了曼彻斯特编码特点的基础上,设计了一种新的编码方案,推导了优先级生成的模型,分析了仲裁的效率。仿真结果表明,在采用基于时分复用的MAC协议的前提下,同传统的逐节点询问方式相比,仲裁时间缩短为原来的四分之一。
In view of the communication resources distribution in single channel, collision detection based priority level arbitration algorithm is proposed. Based on the characteristic of Manchester code, a novel priority level coding scheme is designed, and priority level generating model is derived as well. In addition the efficiency of priority level generation is analyzed. The simulation result shows that on the premise of adopting TDMA-based MAC, compared with the inherent method that inquires each node individually, the time involved in arbitrating for the node with the highest priority level can be reduced by a quarter.
出处
《计算机工程与应用》
CSCD
2012年第27期74-78,93,共6页
Computer Engineering and Applications
基金
甘肃省科技支撑计划项目(No.090GKCA075)
关键词
资源分配
曼彻斯特编码
碰撞识别
优先级生成
resource distribution
Manchester code
collision detection
priority level generation
