Opportunistic routing optimization method based on link correlation in low-duty-ratio network

Abstract

The invention discloses an opportunistic routing optimization method based on link correlation in a low duty ratio network. The method comprises the following steps: step 1, sensor nodes in a network send data detection packets to each other; step 2, link quality of neighbor sensor nodes is collected in the current network; step 3, link correlation is calculated through a receiving bitmap of the data detection packet; expected transmission times ETX is calculated in combination with the link quality and the link correlation; step 4, a grouping decision is made based on the minimum ETX; and step 5, work scheduling plans of the nodes are re-scheduled. Only the information of the neighbor sensor nodes is needed, so that the minimum communication overhead is brought, and meanwhile, the algorithm bridges the difference between limited energy of the nodes and the service life requirement of the application program. Time complexity is low, the effect is good, deployment is easy in the nodes, and the data transmission condition of the nodes in the wireless network can be optimized most truly.

Description

technical field [0001] The invention belongs to the field of wireless sensor network protocols, and in particular relates to a novel low-duty-cycle grouping scheduling algorithm with synchronization within a group and asynchronous outside the group. Background technique [0002] Wireless sensor networks have gradually penetrated into people's daily lives and changed people's lifestyles, including smart homes, infrastructure protection, environmental monitoring, and military fields. As an effective method to reduce the energy consumption of wireless sensor networks and prolong the use period, the low duty cycle mechanism allows nodes to wake up periodically, avoiding the energy consumed when nodes are in a waiting state and idle listening. Using low duty cycle technology can greatly extend the working life of the network. The discovery and research of link correlation can greatly improve the transmission efficiency of opportunistic routing protocols by improving the diversit...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to address the problem that the performance efficiency of opportunistic routing in low-duty-cycle wireless networks that lacks link correlation considerations is not real, and proposes a low-duty-cycle network based on link correlation. Opportunistic routing protocol optimization method

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