基于状态响应的分组预约多址接入协议研究  

Study of packet reservation multiple access protocol based on state response

作　　者：肖楠[1] 梁俊[1] 柏鹏[2] 赵尚弘[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077 [2]空军工程大学理学院,陕西西安710053

出　　处：《计算机工程与设计》2012年第6期2123-2126,2171,共5页Computer Engineering and Design

基　　金：空装综合计划部研究生科技创新基金项目(Dx2010305);陕西省电子信息系统综合集成重点实验室基金项目(200902B)

摘　　要：为了克服经典PRMA-HS协议中的双稳态问题和分组发送允许概率的静态性缺点,提出了一种基于状态响应的改进型分组预约多址接入协议。该协议能够利用卫星基站反馈信息,根据系统状态实时调整分组发送允许概率,使系统始终处在最佳状态。利用计算机对理想信道和随机误差信道条件下的协议性能进行了仿真,实验结果表明,采用状态响应机制能够克服经典PRMA-HS协议的双稳态问题,提高了协议的稳定性,增加了系统容量,降低了分组丢弃率。A modified packet reservation multiple access protocol based on state response is proposed to overcome the bistable behavior and static state of packet transmitting permission probability in the classical PRMA-HS protocol.The modified protocol could adjust the packet transmitting permission probability dynamically according to the state of system by the response message of satellite base station in order to keep the optimal system sate.Performance of the modified protocol under ideal and random packet error channel are simulated by computer and the results indicate that the state response mechanism could eliminate the bistable behavior which has improved the stability of protocol,also the system capacity is increased and the packet dropping probability is decreased.

关 键 词：状态响应 分组预约 多址接入 随机误差 平衡点分析法 协议 

分 类 号：TN915[电子电信—通信与信息系统]