Cross-layer and bi-directional routing method based on hop number and energy in wireless sensor network

A wireless sensor and sensor node technology, applied in network topology, wireless communication, energy consumption reduction, etc., can solve the problems of no establishment of downlink routing, additional overhead of node remaining energy information, increased control overhead, etc., to improve network bandwidth utilization , save node energy and network bandwidth, and save overhead

Inactive Publication Date: 2009-10-21
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0007] The present invention aims at the routing method based on the number of hops in the existing wireless sensor network plane routing technology. In the route creation process, the downlink route is not established, and the query function of the sink node cannot be supported; the update of the remaining energy information of

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  • Cross-layer and bi-directional routing method based on hop number and energy in wireless sensor network
  • Cross-layer and bi-directional routing method based on hop number and energy in wireless sensor network
  • Cross-layer and bi-directional routing method based on hop number and energy in wireless sensor network

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Embodiment Construction

[0024] Uplink route creation is an uplink route creation operation within the entire network. The sink node broadcasts a route creation message by flooding the entire network. After receiving this message, each sensor node establishes an uplink route pointing to the sink node, and uses the broadcast The control message is forwarded once; the downlink route creation is the downlink route creation operation of the sink node, and each sensor node uses the source routing method to carry each intermediate node in the header of the first data packet sent to the sink node. The sink node establishes a downlink route pointing to the sensor node after receiving the information of the node; in the process of data transmission, path selection, unicast transmission of packets on one path, cross-layer acquisition of node hop count and remaining energy information , releases and updates, etc.

[0025] Such as figure 1 Shown is a schematic flowchart of a cross-layer bidirectional routing met...

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Abstract

The invention asks for protecting a cross-layer and bi-directional routing method in a wireless sensor network and relates to the technical field of communication. The existing wireless sensor network has the disadvantages that no downlink route is established in route establishing process, function of inquiring a sink node can not be supported, extra-cost occurs when energy information is updated by adopting node energy as the routing standard, and the cost of controlling the system is slightly larger. The method adopts source routing and cross-layer information share manner and uses smaller cost to establish the downlink route from the sink node to a sensor node without using special control group, the function of inquiring the sink node is added, and regular acquiring, releasing and updating of the rest energy information of the node are realized, when routing, the hop number and the rest energy of the node are both used as the measure standards, the energy consumption when forwarding the node is balanced when reducing the node energy and the network bandwidth consumption, and the service life of the wireless sensor network can be prolonged, and the network bandwidth utilization rate is increased.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to plane routing technology of wireless sensor networks. Background technique [0002] Wireless sensor network is a system that combines technologies such as detection, wireless communication and computer network, and can perform remote perception and monitoring of physical characteristics in a certain area. Because it undertakes multiple tasks such as detection, processing and communication, wireless sensor networks are facing greater pressure on resources such as energy and bandwidth. The sensor nodes in the wireless sensor network have limited volume, computing and storage capabilities; usually rely on batteries to provide energy, and the transmission power is limited, and generally require multi-hop forwarding to achieve data transmission; the location of sensor nodes may change due to movement, and the energy is also limited. It will gradually decrease over ti...

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Application Information

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IPC IPC(8): H04W40/02H04W40/24H04W84/18
CPCY02B60/50Y02D30/70
Inventor 任智陈前斌
Owner CHONGQING UNIV OF POSTS & TELECOMM
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