Active moving method of moving sink node in wireless sensor network

A technology of sensor nodes and wireless sensors, applied in network topology, wireless communication, energy-saving ICT, etc., can solve the problems of low query efficiency and failure to comprehensively consider network energy conditions, etc., and achieve the effect of extending the life cycle

Active Publication Date: 2014-08-13
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] However, the existing sink node movement strategy only looks for a suitable mobile location within the maximum movement radius of the sink node before each movement, and does not comprehensively consider the network energy sit

Method used

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  • Active moving method of moving sink node in wireless sensor network
  • Active moving method of moving sink node in wireless sensor network
  • Active moving method of moving sink node in wireless sensor network

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[0030] The technical solution of the present invention will be described in detail below in conjunction with the drawings:

[0031] The method for autonomous movement of sink nodes of the present invention includes the following main contents:

[0032] 1. Conditions for enabling sink node movement strategy

[0033] This stage is the prerequisite for the sink node movement strategy of the present invention. This stage first executes the network initialization process to establish a tree-shaped routing path; secondly, the sensor node transmits the sensed data information to the sink node along the constituted path; finally, when a certain percentage When the energy of the one-hop node and the two-hop node of the sink node is lower than the set threshold, it indicates that the energy of the area where the current sink node is located has dropped to the warning value, and the sink node movement strategy is started.

[0034] Second, implement the sink node movement strategy

[0035] This st...

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Abstract

The invention discloses an active moving method of a moving sink node in a wireless sensor network, and belongs to the technical field of the wireless sensor network. According to the method, on the basis of a tree form route multi-hop interconnection model of the wireless sensor network, one-hop neighbor nodes of a current sink node are taken as subtree roots, subtrees are divided to form subtree sets, and the maximum value and the minimum value of remaining energy of a sensor node in each data propagation path in each subtree within a certain range are obtained through the sink node; then according to certain conditions, a dying node sequence and a sink feasible moving position sequence are generated; the sink node selects a proper position in the sequences to move. The sequences are stored in the sink node for a long time and are updated according to energy of a node of the next round. Accordingly, the sink node can be guided to move by mastering extreme values of network energy within a certain range in real time, energy balance among network nodes can be achieved gradually, and time and energy cost brought by a large quantity of repeated inquiries can be effectively reduced at the same time.

Description

technical field [0001] The invention relates to an autonomous movement method of a mobile sink node in a wireless sensor network, which is mainly used to realize energy balance between nodes of the wireless sensor network and improve the network life cycle, and belongs to the technical field of wireless sensor networks. Background technique [0002] Wireless sensor network is an emerging technology. Nodes that integrate sensing, computing, and communication capabilities are organized into a communication network, which is used to perceive the information of the objective world and provide it to people for analysis and judgment. The adaptability, invulnerability, easy deployment and low cost of wireless sensor network make it have broad development prospects in military and industrial fields. In recent years, with the rise of the Internet of Things. Wireless sensor networks have achieved rapid development and are widely used in industrial applications such as smart home and...

Claims

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Application Information

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IPC IPC(8): H04W40/10H04W84/18
CPCY02B60/50Y02D30/70
Inventor 付雄汤中睿程春玲
Owner NANJING UNIV OF POSTS & TELECOMM
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