计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2015年
15期
68-74,118
,共8页
入网时延%帧结构优化%时分多址(TDMA)%媒体介质访问控制(MAC)协议%Ad Hoc
入網時延%幀結構優化%時分多阯(TDMA)%媒體介質訪問控製(MAC)協議%Ad Hoc
입망시연%정결구우화%시분다지(TDMA)%매체개질방문공제(MAC)협의%Ad Hoc
access delay%frame structure optimization%Time Division Multiple Access(TDMA)%Media Access Control (MAC)%Ad Hoc
针对快速动态时隙分配（Fast Dynamic Slot Assignment，F-DSA）MAC协议不能处理多节点申请入网的问题，对其帧结构和入网算法进行了完善，提出了碰撞感知快速动态时隙分配（Collision aware Fast Dynamic Slot Assignment，CF-DSA）协议。在相同入网算法的前提下，提出了一种新的控制微时隙分布方式，得到了聚合碰撞感知快速动态时隙分配（Aggregate Collision aware Fast Dynamic Slot Assignment，ACF-DSA）协议，通过理论建模与数值分析，主要研究了采用两种不同帧结构的协议性能，发现ACF-DSA较CF-DSA降低了节点的入网竞争时延，且对变化的网络环境具有更好的适应性，表明聚合碰撞感知的帧结构有助于节点入网效率的提高。
針對快速動態時隙分配（Fast Dynamic Slot Assignment，F-DSA）MAC協議不能處理多節點申請入網的問題，對其幀結構和入網算法進行瞭完善，提齣瞭踫撞感知快速動態時隙分配（Collision aware Fast Dynamic Slot Assignment，CF-DSA）協議。在相同入網算法的前提下，提齣瞭一種新的控製微時隙分佈方式，得到瞭聚閤踫撞感知快速動態時隙分配（Aggregate Collision aware Fast Dynamic Slot Assignment，ACF-DSA）協議，通過理論建模與數值分析，主要研究瞭採用兩種不同幀結構的協議性能，髮現ACF-DSA較CF-DSA降低瞭節點的入網競爭時延，且對變化的網絡環境具有更好的適應性，錶明聚閤踫撞感知的幀結構有助于節點入網效率的提高。
침대쾌속동태시극분배（Fast Dynamic Slot Assignment，F-DSA）MAC협의불능처리다절점신청입망적문제，대기정결구화입망산법진행료완선，제출료팽당감지쾌속동태시극분배（Collision aware Fast Dynamic Slot Assignment，CF-DSA）협의。재상동입망산법적전제하，제출료일충신적공제미시극분포방식，득도료취합팽당감지쾌속동태시극분배（Aggregate Collision aware Fast Dynamic Slot Assignment，ACF-DSA）협의，통과이론건모여수치분석，주요연구료채용량충불동정결구적협의성능，발현ACF-DSA교CF-DSA강저료절점적입망경쟁시연，차대변화적망락배경구유경호적괄응성，표명취합팽당감지적정결구유조우절점입망효솔적제고。
According to the problems that F-DSA can’t deal with the multinode’s reserves to access into the network, the CF-DSA(Collision aware Fast Dynamic Slot Assignment)MAC protocol is proposed to improve the frame structure and the access algorithm of F-DSA. Furthermore, based on the same algorithm, ACF-DSA(Aggregate Collision aware Fast Dynamic Slot Assignment)is proposed which has a new arrangement of control mini-time slot. Through the theoretical modeling and numerical analysis, the performance of two different frame structures is studied. The results of numerical analysis show that ACF-DSA has less competition delay than CF-DSA and has better adaptability for the changing network environment, which means that the aggregate collision awareness frame structure can improve the accessing efficiency.
