A method of reducing latency and energy consumption in a dense wireless sensor network

A wireless sensor and network technology, applied in the direction of network topology, wireless communication, energy consumption reduction, etc., can solve the problems of limited node energy, high replacement cost, and inability to replace batteries

Active Publication Date: 2019-05-31
CENT SOUTH UNIV
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Problems solved by technology

On the other hand, due to economic considerations, in order to reduce manufacturing costs as much as possible, sensor nodes are often manufactured in a relatively small size and powered by batteries. Because they are often deployed in

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  • A method of reducing latency and energy consumption in a dense wireless sensor network
  • A method of reducing latency and energy consumption in a dense wireless sensor network
  • A method of reducing latency and energy consumption in a dense wireless sensor network

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] A method for reducing delay and energy consumption in a dense wireless sensor network. In a dense wireless sensor network, set the minimum one-hop forward distance and limit the number of sender forwarding sets to reduce delay and energy consumption. Such as figure 1 As shown in , after setting r 0 After that, the area of ​​the forwarding set is reduced.

[0035] The method of using the present invention to obtain the minimum one-hop distance is when r 0 When traversing from 0 to r, make the following formula obtain the minimum value.

[0036]

[0037] in, Is a hop delay, that is, the sender successfully transmits the delay of the data packet to the relay node, and τ is the reciprocal of the duty cycle, that is, the cycle length / active time. In the present invention, the active time length of the node is determined as A time slot, τ is t...

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Abstract

The invention discloses a method for reducing time delay and energy consumption in a dense wireless sensor network. The method comprises the following steps: according to the number of nodes in a forwarding set of a sender and the influence of the duty ratio of node work on delay; under the condition that the duty ratio of the nodes is not changed, the number of candidate nodes of a sender in thedense network is reduced, one-hop delay is reduced, and collision caused by simultaneous awakening of a plurality of candidate relay nodes is reduced, so that the data load capacity of the network isreduced, and the energy consumption of the network is reduced. And since the sending node selects the node closer to the convergence center as the relay node, the one-hop forward distance is increased, the hop count is reduced, and the end-to-end delay is reduced.

Description

technical field [0001] The invention belongs to the field of wireless sensor networks, and in particular relates to a method for reducing time delay and energy consumption by reducing the number of forwarding node sets in dense wireless sensor networks. Background technique [0002] Sensor nodes are composed of sensing elements, batteries, data processing and communication components, and are deployed in large numbers in the environment that needs to be monitored. The sensor nodes self-organize to form a network, and work together to complete corresponding tasks such as event perception and data collection. Wireless sensor networks are widely used, such as weather monitoring, traffic monitoring, earthquake detection, noise level testing, health monitoring, etc. Usually the sensor node transmits the perceived data to the sink node (or control center) through multi-hop routing, after analyzing and processing the data, and taking corresponding control measures for corresponding...

Claims

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Application Information

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IPC IPC(8): H04W4/38H04W28/10H04W52/02H04W84/18
CPCY02D30/70
Inventor 王飞虎刘安丰任莹莹
Owner CENT SOUTH UNIV
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