计算机工程与设计
計算機工程與設計
계산궤공정여설계
Computer Engineering and Design
2015年
10期
2607-2612
,共6页
陈柯帆%吕娜%张伟龙%包志祥
陳柯帆%呂娜%張偉龍%包誌祥
진가범%려나%장위룡%포지상
时分多址%业务量%协作%吞吐量%媒体接入控制
時分多阯%業務量%協作%吞吐量%媒體接入控製
시분다지%업무량%협작%탄토량%매체접입공제
TDM A%traffic%cooperation%throughput%M AC
针对动态TDMA协作MAC协议(C‐DTDMA)在高业务量或低信噪比网络中性能下降的问题,对动态TDMA协作MAC协议进行改进,提出一种基于业务量感知的动态TDMA协作MAC协议。通过在控制时隙进行信息交互,传输失败节点利用业务量较小节点的数据时隙进行协作重传。对改进的协议进行数学建模和数值仿真分析,仿真结果表明,该协议可使传输失败节点在高业务量网络中获得较高吞吐量,在低信噪比环境下满足了业务量较大节点的吞吐量需求。
針對動態TDMA協作MAC協議(C‐DTDMA)在高業務量或低信譟比網絡中性能下降的問題,對動態TDMA協作MAC協議進行改進,提齣一種基于業務量感知的動態TDMA協作MAC協議。通過在控製時隙進行信息交互,傳輸失敗節點利用業務量較小節點的數據時隙進行協作重傳。對改進的協議進行數學建模和數值倣真分析,倣真結果錶明,該協議可使傳輸失敗節點在高業務量網絡中穫得較高吞吐量,在低信譟比環境下滿足瞭業務量較大節點的吞吐量需求。
침대동태TDMA협작MAC협의(C‐DTDMA)재고업무량혹저신조비망락중성능하강적문제,대동태TDMA협작MAC협의진행개진,제출일충기우업무량감지적동태TDMA협작MAC협의。통과재공제시극진행신식교호,전수실패절점이용업무량교소절점적수거시극진행협작중전。대개진적협의진행수학건모화수치방진분석,방진결과표명,해협의가사전수실패절점재고업무량망락중획득교고탄토량,재저신조비배경하만족료업무량교대절점적탄토량수구。
In networks with high traffic or low signal‐to‐noise ratio ,the performance is declined for cooperative TDMA MAC protocol using dynamic slot assignment (C‐DTDMA) .To overcome the problem ,an improved protocol based on the awareness of transmission business was put forward .Through the interaction of information in the control slots ,the nodes that failed to transmit their packets used the data slot of the node whose traffic was smaller than the source node for cooperative retransmis‐sion .Through mathematical modeling and numerical simulation analysis ,the results show that the improved protocol can help the failed nodes get higher throughput in high traffic networks ,and satisfy the throughput requirements of nodes that have grea‐ter traffic in low signal‐to‐noise ratio networks .