Sensor network real-time routing method based on data-driven link estimation

Abstract

The invention discloses a sensor network real-time routing method based on data-driven link estimation, which comprise the following steps of: 1, perceiving geographical position information by a current node, and informing the geographical position information of a neighbor node; 2, when data are sent, generating a data message and a destination node, and when the data message is forwarded, acquiring the data message and the destination node from a media access control (MAC) layer; 3, calculating the distance from the current node to the destination node; 4, calculating the distance from the current node to the destination node in a neighbor set to generate a hopping candidate set; 5, calculating path speed from the current node to the node in the hopping candidate set; 6, selecting one node as a hopping node; 7, writing a node clock value into a data frame of the MAC layer; 8, sending the data message to the MAC layer; and 9, updating the hop delay, delivery rate and energy consumption of the corresponding nodes in the neighbor set. By the method, the real time of the transmission of network data is improved, and the energy consumption of the network is reduced.

Description

technical field [0001] The invention relates to the field of real-time routing protocols for sensor networks, in particular to a real-time routing method for sensor networks based on data-driven link estimation. Background technique [0002] Wireless sensor network is a kind of wireless self-organizing network. Compared with the traditional network, it has the following characteristics: it is composed of a large number of sensor nodes; the nodes are powered by batteries, and the energy, computing power, storage space and communication capacity are limited; quick. At present, there are a lot of research contents in the field of wireless sensor network, among which the routing protocol, as the core technology of wireless sensor network, has become a hot research topic at home and abroad. The wireless sensor network routing protocol is responsible for forwarding the data message from the source node to the destination node through the network. It mainly includes two functions:...

AI Technical Summary

Problems solved by technology

This algorithm has serious disadvantages: implosion (a node receives multiple copies of the same data from neighbor nodes almost at the same time), overlap (a node receives almost the same data sent by multiple nodes monitoring the same area), low resource utilization (The node does not consider its own resource limitations, and forwards data in any case)

However, the single-cluster method makes the cluster head a key point, and its failure will lead to routing failure; and all nodes are required to have the ability to communicate with the sink node; if the chain is too long, the data transmission delay will increase, which is not suitable for real-time applications; The algorithm requires nodes to know the positions of other nodes, and the overhead is very high, such as Figure 5 Indicates the data transmission of the PEGASIS algorithm along the chain

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