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Energy-optimized wireless sensor network routing method

A wireless sensor, energy optimization technology, applied in the field of communication, can solve the problems of data loss and large energy consumption, and achieve the effect of reducing transmission and prolonging network life.

Active Publication Date: 2016-08-17
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0004] However, this method has the following disadvantages: nodes outside the routing topology search for sink nodes through flood broadcasting, which consumes a lot of energy
And when a node outside the routing topology finds the Sink node and transmits data, the Sink node may have moved to another location, resulting in data loss

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Embodiment Construction

[0033] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] In the technical solutions provided in the embodiments of the present invention, the applied network topology is as follows figure 1 As shown, the mobile sink node establishes a directed acyclic graph through the RPL protocol within the range of limited hops, and the member nodes belonging to the directed acyclic graph directly send data to the sink node, and the nodes outside the directed acyclic graph pass Find Sink nodes or DAG member nodes to send data to Sink nodes. After the mobile sink node stays for a period of time, it will move to another location and establish a new directed acyclic graph through the RPL protocol.

[0035] figure 2 is a schematic flowchart of an energy-optimized wireless sensor network routing method according to an embodiment of the present invention. The energy-optimized wireless sensor network routi...

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Abstract

The invention relates to an energy-optimized wireless sensor network routing method. The method comprises the following step: a to-be-transmitted data node in a network judges whether the to-be-transmitted data node is a member node of a directed acyclic graph; when the to-be-transmitted data node is the member node of the directed acyclic graph, the node directly transmits data to Sink nodes of the acyclic graph where the node is located; when the to-be-transmitted data node is not the member node of the directed acyclic graph, the node sends a routing request to surrounding neighbor nodes through increasing type multicast; if the Sink nodes or a member node of the acyclic graph is found, the Sink nodes or the member node of the directed acyclic graph answers route response information according to the received routing request; the to-be-transmitted data node in the network selects one Sink node according to the route response information for data transmission. With the adoption of the method, transmission of route messages are effectively reduced in the presence of multiple mobile Sink nodes, data communication between the to-be-transmitted data node in the network and the Sink nodes is realized, and the service life of the network is prolonged.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to an energy-optimized wireless sensor network routing method. Background technique [0002] In the IPv6 wireless sensor network, due to the influence of the RPL tree routing protocol, the nodes close to the Sink node in the network will face more data transmission tasks. With the frequent data transmission to the Sink node, the closer the node to the Sink node , the faster its energy consumption will eventually cause energy holes around the Sink node. Therefore, balancing the energy consumption of the network will be an important technology to prolong the life cycle of IPv6 wireless sensor network. [0003] In the prior art, multiple sink nodes move randomly and form a routing topology in a small area to complete network data collection. The nodes in the routing topology directly transmit data to the sink node, and the nodes outside the routing topology are searched by the si...

Claims

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Application Information

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IPC IPC(8): H04W40/10H04W40/18H04W84/18
CPCH04W40/10H04W40/18H04W84/18Y02D30/70
Inventor 王浩王朝美王平陈伟邓军
Owner CHONGQING UNIV OF POSTS & TELECOMM
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