Energy consumption control method under delay constraint in wireless sensor network

Abstract

The invention relates to the field of wireless self-organizing networks and sensor networks, in particular to an energy consumption control method under delay constraint in a wireless sensor network. The energy consumption control method comprises the following steps of: generating a normal data packet and a pioneer data packet by a source node when data packets in the wireless sensor network need to be transmitted to a base station from the source node, wherein the normal data packet is used for transmitting the data packets, and the pioneer data packet is used for selecting nodes on a transmission path; determining the delay constraint of the nodes on the transmission path; computing the best sleep time of the nodes on the transmission path; applying the best sleep time to a duty ratio self-adaptive adjustment mechanism to obtain new duty ratio to transmit the data packets; and respectively recovering work cycles of all the nodes on the transmission path into an original state after all the data packets are transmitted to the base station. According to the energy consumption control method under the delay constraint in the wireless sensor network, on the premise that the constraint condition of the wireless sensor network on transmission delay is met, the energy consumption of the wireless sensor network is reduced to the maximum limit, and the service life of the wireless sensor network is prolonged.

Description

technical field [0001] The invention relates to the fields of wireless ad hoc networks and sensor networks, in particular to an energy consumption control method under delay constraints in wireless sensor networks. Background technique [0002] A wireless sensor network (WSN) sensor node is generally composed of a sensor, a processor, a memory, a power supply device, an antenna and a drive device. Since sensor nodes have limited storage space and are usually deployed in inaccessible environments, and require antenna modules to frequently transmit collected data to network base stations and use batteries as the main energy source, in wireless sensor networks, energy consumption issues is its core problem. With the advancement of microelectronics technology and crystal technology, the energy consumption of the processor module and sensor module on the sensor node becomes very low, and the energy consumption is mainly used for the antenna communication module. Therefore, reduc...

AI Technical Summary

Problems solved by technology

However, the "frame header" brings more network delay

Considering the network's limitation on transmission time, the original LPL mechanism cannot meet the network's requirements for end-to-end transmission delay. The balance between node energy consumption and delay in low-energy LPL wireless sensor networks needs to be optimized.

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