一种针对树形拓扑网络的混合MAC协议
发布时间：2018-12-10 18:04
【摘要】：在树形拓扑水声传感网络中,时分多址(TDMA)机制存在信道利用率低的问题。为此,提出一种轻量级的流量自适应随机访问与TDMA的混合MAC协议。该协议在网络流量较低时采用S-ALOHA竞争机制提高信道利用率,运用最优化算法计算分配给簇内子节点的最大发送概率,通过流量自适应的灵活时隙分配机制以适应不同的网络流量。实验结果表明,该协议不仅能够提高树形拓扑网络中节点的通信效率,能减少子节点的等待时间。
[Abstract]:In the tree-topology underwater acoustic sensor networks, the channel utilization rate is low in the TDMA (time Division multiple access) (TDMA) (TDMA) mechanism. For this reason, a lightweight traffic adaptive random access protocol and a hybrid MAC protocol for TDMA are proposed. When the network traffic is low, the S-ALOHA competition mechanism is used to improve the channel utilization, and the optimal algorithm is used to calculate the maximum transmission probability assigned to the sub-nodes in the cluster. Adaptive time slot allocation mechanism is used to adapt to different network traffic. Experimental results show that the proposed protocol can not only improve the communication efficiency of the nodes in the tree topology network, but also reduce the waiting time of the sub-nodes.
【作者单位】： 上海海事大学信息工程学院;
【基金】：国家自然科学基金(60972047) 上海市教育委员会科研创新项目(S2012388)
【分类号】：TN929.3;TP212.9
本文编号：2370989
[Abstract]:In the tree-topology underwater acoustic sensor networks, the channel utilization rate is low in the TDMA (time Division multiple access) (TDMA) (TDMA) mechanism. For this reason, a lightweight traffic adaptive random access protocol and a hybrid MAC protocol for TDMA are proposed. When the network traffic is low, the S-ALOHA competition mechanism is used to improve the channel utilization, and the optimal algorithm is used to calculate the maximum transmission probability assigned to the sub-nodes in the cluster. Adaptive time slot allocation mechanism is used to adapt to different network traffic. Experimental results show that the proposed protocol can not only improve the communication efficiency of the nodes in the tree topology network, but also reduce the waiting time of the sub-nodes.
【作者单位】： 上海海事大学信息工程学院;
【基金】：国家自然科学基金(60972047) 上海市教育委员会科研创新项目(S2012388)
【分类号】：TN929.3;TP212.9
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