Establishment method of multi-hop wireless self-organization network applied to agriculture

Abstract

The invention relates to an establishment method of a multi-hop wireless self-organization network applied to agriculture. The establishment method comprises the following steps: an initial network comprises a source node, a child node list and a common node, and the source node is used for sending a networking broadcast frame; the source node distributes a logical topology frame for a node which sends a networking response frame after receiving the networking response frame, the node mark which sends the networking response frame and the corresponding logical topology frame are stored in the child node list, a networking acknowledgement frame is sent to the node which sends the networking response frame, and therefore a networking accomplishment state is achieved; the node which sends the networking response frame updates a father node of the node and the logical topology frame after the networking acknowledgement frame is received; and the node which sends the networking response frame delays according to the logical topology frame of the node and carries out networking with the node as the source node till all nodes accomplish networking when the delay is finished. The establishment method can reduce overall power consumption of the network, reduce demands on hardware and quickly obtain a topological structure of the network under the condition that basic needs can be met.

Description

technical field [0001] The invention relates to the technical field of wireless communication networks, in particular to a method for establishing a multi-hop wireless self-organizing network applied in agriculture. Background technique [0002] With the rapid development of micro-electro-mechanical systems, wireless communication and digital circuits, a large number of sensor nodes with low power consumption, low cost and multi-functional characteristics have emerged. The sensor network based on the deployment of a large number of sensor nodes has attracted more and more attention because of its wide application prospects. Wireless sensor networks can be widely used in military and civilian environments for information collection and processing, object tracking and network environment detection, especially suitable for deployment in the field, traffic arteries, medical and security departments and other occasions. [0003] However, the application of wireless sensor networ...

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Problems solved by technology

2. The data transmission rate is low, the number of data uploads is infrequent, and the requirements for time synchronization error are not high

3. The position of the node is not particularly random. Generally, one kind of crop is planted in one field, and a sensor node is configured. The node must be placed in this field, and other nodes are placed in other fields. The plots are generally more regular. , rectangular

5. Once the node is launched, it needs to keep working for a long time, so lower power consumption is required

Such a networking method is more flexible, and any node can communicate with each other, but there are more information used to maintain routing in the network, and the power consumption is relatively large; and the group leader node and ordinary nodes need to be placed together, and compared with the sensor network For the application characteristics of crops, this method is more likely to lead to the existence of redundant nodes, which increases the cost; again, generally a sensor network uses the same frequency, and the collision problem always exists, although many RF chips now use CSMA / CA technology, but this method increases the average working time of the chip to successfully send a data, and the power consumption of the radio frequency chip in the sending state is the largest, which greatly increases the average power consumption of the node

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