Wireless sensor network routing method with high robustness and low delay

Abstract

The invention provides a wireless sensor network routing method with high robustness and low delay. The wireless sensor network routing method comprises several stages of network initialization, period detection, path discovery and data forwarding, and comprises the following steps: sending an initialization packet by a base station, receiving the initialization packet by a node, establishing a neighbor node set, and periodically broadcasting a detection packet; replying a detection ACK packet by the node after waiting for a random time; updating the neighbor node set; and when data need to be sent, starting the path discovery, finding a fast path leading to a destination node, making response by the destination node after receiving the detection, determining assistance nodes on the way of the path, finally returning acknowledgement to a source node, sending the data by the source node according to a detection result, making decision by each node on the way according to the detected information and delay information, and finally sending the data to the destination node. According to the method, the average end-to-end delay is shortened by the reliable path discovery, the robustness is improved on the basis of ensuring the delay by using all kinds of fault-tolerant mechanisms, and no synchronization is required, therefore the synchronization cost is reduced.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to a low-delay wireless sensor network routing method that can adapt to various network environments. Background technique [0002] In recent years, the rapid development of sensor technology and the increasing integration of chips have produced many low-power and powerful sensors, which enable them to provide functions such as data acquisition, information calculation, and data communication in a very small volume. There are many kinds of information that can be collected. The wireless sensor network is composed of these sensor nodes. They use wireless modules to communicate with each other. According to the established protocol, they self-organize into a network, collect target data, and then transmit the data back to the server through a certain strategy. Therefore, wireless sensor networks have broad application prospects, such as environmental monitoring and f...

AI Technical Summary

Problems solved by technology

This type of protocol is less robust and not suitable for complex environments

[0004] To sum up, the current routing protocols cannot meet this kind of requirements very well. People need a routing protocol that can maintain better delay performance in complex and changeable environments.

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