Computer Engineering and Applications ›› 2015, Vol. 51 ›› Issue (15): 68-74.
Previous Articles Next Articles
CHEN Kefan, LV Na, ZHANG Weilong
Online:
Published:
陈柯帆,吕 娜,张伟龙
Abstract: 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.
Key words: access delay, frame structure optimization, Time Division Multiple Access(TDMA), Media Access Control(MAC), Ad Hoc
摘要: 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。
关键词: 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
CHEN Kefan, LV Na, ZHANG Weilong. Frame structure optimization and analysis of fast dynamic slot assignment MAC protocol[J]. Computer Engineering and Applications, 2015, 51(15): 68-74.
陈柯帆,吕 娜,张伟龙. 快速动态时隙分配MAC协议的帧结构优化与分析[J]. 计算机工程与应用, 2015, 51(15): 68-74.
0 / Recommend
Add to citation manager EndNote|Ris|BibTeX
URL: http://cea.ceaj.org/EN/
http://cea.ceaj.org/EN/Y2015/V51/I15/68