摘要
无线网络中的数据传输可靠性不及有线网络环境中的数据传输,尽管在无线单播传输中可以使用虚拟载波侦听,但组播和播发仍然不能利用准确的机制进行可靠传输。这是由于播发传输的确认分组将导致更高的通信业务量和开销。可靠的数据播发对于无线传感器网络中的许多应用至关重要。文中提出了一种基于无线传感器ZigBee网络可靠数据播发的有效确认方法和分级确认机制,减少重播分组和ACK分组,基于度数的ACK/重播播发抖动以及面向父节点的重传是实现高效数据播发的关键。仿真结果表明,所提出的方案能够有效减少确认流量以及通信开销,为ZigBee网络提供高可靠性的数据播发传输。
The reliability of data transmission in wireless networks is not as good as that in wired networks. Although virtual carrier sense can be used in wireless unicast transmissions, multicast and broadcast cannot still be reliably transmitted using accurate mechanisms. This is because the acknowledgment packets that are transmitted for transmission will result in higher traffic and overhead. Reliable data distribution is critical for many applications in wireless sensor networks. This paper proposes an effective acknowledgment method and hierarchical acknowledgment mechanism for reliable data broadcast based on wireless sensor ZigBee network. It reduces rebroadcast packets and ACK packets. Degree-based ACid/replay broadcast jitter and father-node retransmission are key for efficient data dissemination. The simulation results show that the proposed scheme can effectively reduce the acknowledgement traffic and communication overhead, and provide highly reliable data broadcast transmission for ZigBee networks.
作者
尚珵
SHANG Cheng(Nanjing University of Science ＆ Technology,Nanjing 210094,China)
出处
《信息技术》
2018年第10期131-136,共6页
Information Technology
