一种面向6TiSCH网络的突发性紧急数据流时隙抢占方法

本发明属于IPv6无线传感网络技术领域，具体涉及一种面向6TiSCH网络的突发性紧急数据流时隙抢占方法，包括：突发性紧急数据流源节点发送时隙抢占请求报文，等待并监听时隙抢占确认报文；周期性数据节点竞争回复时隙抢占请求报文，并在时隙抢占确认报文中添加发包时刻信息；突发性紧急数据流收到竞争成功节点发来的时隙抢占确认报文之后，根据时隙抢占确认报文携带的发包时刻信息等待发包，根据跳数信息决定是否重复上述动作；本发明能够在低通信报文开销的情况下完成突发紧急数据流抢占时隙，有效避免信道冲突，可保证突发紧急数据流的及时交付，降低对周期性数据流影响。 The invention belongs to the technical field of IPv6 wireless sensor networks, and particularly relates to a 6TiSCH network-oriented sudden emergency data stream time slot preemption method, which comprises the following steps that: a sudden emergency data stream source node sends a time slot preemption request message, and waits and monitors a time slot preemption confirmation message; the periodic data node competes to reply the time slot preemption request message and adds packet sending time information in the time slot preemption confirmation message; after the sudden emergency data flow receives a time slot preemption confirmation message sent by the successful competition node, packet sending is waited according to packet sending time i