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Micro-cycle-based sleep method adapted to routing nodes in wireless sensor network

A wireless sensor and microcycle technology, which is applied in the field of wireless sensor network and Internet of Things, can solve the problems of inaccessibility, etc., and achieve the effect of improving the life span and reducing energy consumption

Inactive Publication Date: 2012-10-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

There are two problems in this method: (1) It must be established on the basis that the nodes that can take on the routing task have sufficient redundancy; (2) Any node, as long as it acts as a routing node within the time period (this node can be called as "on-site routing node"), it is still working all the time, and cannot enter the dormant state to save energy consumption, such as figure 1 as shown in (b)

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  • Micro-cycle-based sleep method adapted to routing nodes in wireless sensor network
  • Micro-cycle-based sleep method adapted to routing nodes in wireless sensor network
  • Micro-cycle-based sleep method adapted to routing nodes in wireless sensor network

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Embodiment Construction

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described.

[0027] First of all, in order to distinguish it from the routing node sleep strategy in a redundant deployment environment, the concept of "on-site routing node" is defined. The "in-place routing node" is considering that a node may serve as a routing function in certain time periods, and in some time periods it is used as an ordinary routing node and does not serve as a routing function. The nodes are called "in-place routing nodes".

[0028] In the existing mechanism, the in-position routing node cannot enter the dormant state. The present invention adopts a micro-sleep strategy, allowing the on-site routing node to enter the dormant state periodically, while ensuring that the on-site routing node can normally complete routing functions such as relay forwarding. Specifically include:

[0029] The sensor network nodes a...

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Abstract

The invention provides a micro-cycle-based sleep method adapted to routing nodes in a wireless sensor network. The method comprises the following steps of: synchronizing global clocks of all nodes in the entire wireless sensor network; dividing the time into a micro-cycle taking t as the unit of length at bit routing nodes according to the global clocks, and the bit routing nodes going to sleep by taking t as a unit periodically; the bit routing nodes being routing nodes being responsible for relaying tasks in the current period of time; and the micro-cycle t consisting of detection time and sleep time, and the bit routing nodes receiving and sending data within the detection time and being in a sleep state in the sleep time. According to the method, the energy consumption of the nodes in the network can be effectively reduced, and the network lifetime is improved.

Description

technical field [0001] The invention relates to the technical fields of wireless sensor networks and the Internet of Things, in particular to energy-saving technologies for wireless sensor network routing nodes. Background technique [0002] Due to the limitation of the working environment, wireless sensor networks usually need to be powered by batteries. In order to extend the lifetime of the network, using the dormancy mechanism to reduce the energy consumption of nodes has become one of the core issues of wireless sensor networks. There are currently two dormancy mechanisms: (1) Node dormancy strategy: adjust the dormancy time of the node itself according to business needs to reduce energy consumption; (2) Network dormancy strategy: According to the overall coverage or connectivity requirements of the network, periodically Some nodes are put into sleep state. [0003] On ordinary sensor nodes, both mechanisms can work effectively. Such as figure 1 As shown in (a), the...

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Application Information

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IPC IPC(8): H04W52/02
CPCY02B60/50Y02D30/70
Inventor 韦云凯吴晶晶毛玉明冷甦鹏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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