一种基于TDMA的多信道MAC协议  

A Multi-Channel MAC Protocol Based on TDMA

作　　者：张桃 毛建兵[1] 王叶群 ZHANG Tao;MAO Jianbing;WANG Yequn(No.30 Institute of CETC,Chengdu 610041)

机构地区：[1]中国电子科技集团公司第三十研究所,成都610041

出　　处：《计算机与数字工程》2018年第12期2506-2511,共6页Computer & Digital Engineering

基　　金：国家自然科学基金(编号:61871474)资助

摘　　要：当前无线自组织网络(Ad Hoc)中的节点数量迅速提升,而传统的基于CSMA\CA的MAC协议在网络负载过大时会导致整个网络的性能迅速下降。相较而言,基于TDMA的MAC协议更加适合Ad Hoc网络。通过对FPRP(Five-PhaseReservation Protocol)协议这一典型的动态TDMA协议进行研究,提出了一种多信道的改进MAC协议即MC-FSHP协议(Multi-Channel of Four-step Handshake Protocol)。采用子网划分,提升信道利用率。提出了一种新的冲突解决算法,能根据节点负载动态调整时隙竞争成功率,使全网时隙分配更加公平。The number of nodes in Ad Hoc has been increasing rapidly.The traditional MAC protocol based on CSMA\CA will cause the performance of the whole network to decline rapidly when the network load is too large.In comparison,the MAC protocol based on TDMA is more suitable for Ad Hoc network.Through studying the typical dynamic TDMA Protocol of FPRP(five-phase Reservation Protocol),an improved MAC Protocol called MC-FSHP(Multi-Channel of Four-step Handshake Protocol)is pro?posed.Subnet division is adopted to improve channel utilization.A new conflict resolution algorithm is proposed,which can dynami?cally adjust the success rate of gap competition according to the node load and make the gap distribution more equitable.

关 键 词：ADHOC MAC协议 FPRP协议 MC-FSHP协议 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]