同步无线Mesh网络数据包连发技术研究

Research on data packet continuous transmission technology in synchronization wireless Mesh networks

现有的基于多方向天线阵列的同步无线Mesh网络在一个数据时隙内只发送一个数据包,这在发送节点采用高调制速率发送数据包时会造成时隙利用率的下降。针对该问题,对该网络下的数据包连发技术进行了研究,给出了最多可连发的数据包个数与计算时机、序列号与确认机制、涉及到的参量、父子节点处理流程的详细设计方案。理论性能对比结果表明,在发送节点采用高调制速率发送数据包时,在该网络下采用数据包连发技术能够大幅度提高时隙利用率,网络性能明显提升。

Only one data packet is sent in a time-slot in synchronization wireless Mesh network based on the existing multi-directional antenna array,which will decrease the slot utilization rate when data packets are sent in high modulation rate at transmitting node. To solve this problem,the technology of data packet continuous ransmission in this network environment is studied. The detailed design scheme of the number of maximum data packet continuous ransmission,calculation opportunity,se-quence number,acknowledgment mechanism,parameters and node processing flow is offered in this paper. The technology was fully tested in actual hardware environment. The comparison result shows,when data packets are sent in high modulation rate at transmitting node,the technology of the data packet continuous ransmission can improve time-slot utilization,and the perfor-mance of the network can be improved obviously.