Wireless sensor network transmission method based on medium access control (MAC) protocol

A medium access control and wireless sensor technology, applied in the field of computer networks, can solve problems such as the limitation of the application range of the DMAC protocol, and achieve the effects of reducing transmission delay, increasing throughput, and reducing transmission delay.

Inactive Publication Date: 2012-08-22
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the DMAC protocol requires a strict tree structure to reflect its characteristics. It is difficult to m

Method used

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  • Wireless sensor network transmission method based on medium access control (MAC) protocol
  • Wireless sensor network transmission method based on medium access control (MAC) protocol
  • Wireless sensor network transmission method based on medium access control (MAC) protocol

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Embodiment Construction

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] In the wireless sensor network transmission method based on the medium access control protocol of the present invention, the communication cycle is determined by the application program, and the node performs the transmission workflow in the communication cycle, and when a communication cycle ends, it enters the next communication cycle to continue the transmission Workflow: In the transmission workflow of the communication cycle, the nodes send data packets, and when each data packet is sent, all nodes enter sleep, and enter the next data packet after an interval of t until the end of the communication cycle;

[0033] The sending flow of each described data packet comprises the following steps:

[0034] 1) Wake up all nodes and judge whether the node has data to send. When the node has data to send, the node is the sending node. The sending no...

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Abstract

The invention discloses a wireless sensor network transmission method based on a medium access control (MAC) protocol. In the invention, a self-adapting duty ratio adjustment mechanism and a grouping respondence ACK (acknowledgement character) mechanism are adopted; and under the condition of considering the control spending, the quantity of nodes in mutual data in a frame is increased, delay is effectively decreased, the transmission rate is improved, and meanwhile, the network throughput is increased. The wireless sensor network transmission method based on the competitive MAC protocol simultaneously adopts a common periodicity interception/dormancy mechanism, a virtual carrier interception mechanism, an RTS (radar tracking station)/CTS (crude oil transshipment station)/DATA/ACK in-band signaling as well as an information division mechanism, and such mechanisms have active influence on the energy dissipation of the nodes, avoidance of bunch audition and the like. The wireless sensor network transmission method provided by the invention ensures that the MAC protocol is capable of wonderfully finishing detection mission during accidents, is not only suitable for rare outburst transmissive networks, and but also suitable for a dense high-throughput WSN (wireless sensor network).

Description

technical field [0001] The invention belongs to the technical field of computer networks, in particular to a wireless sensor network transmission method based on a media access control protocol. Background technique [0002] In some wireless sensor networks (Wireless Sensor Networks, WSN) that monitor emergencies, such as monitoring the occurrence of forest fires, gunshots in ambulance and anti-terrorism, explosions, and industrial safety production, the requirements for data transmission are relatively high. real-time. When a node senses the occurrence of an event, it needs to quickly transmit the collected information to the aggregation node and reach the management node through the Internet or satellites. Users configure and manage the sensor network through the management node, issue monitoring tasks and collect monitoring data. At the same time, take timely and effective response measures to emergencies to minimize the losses caused by emergencies. [0003] The media...

Claims

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Application Information

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IPC IPC(8): H04W80/02H04W84/18
Inventor 刘昊姜毅鑫蒋富龙吴建辉
Owner SOUTHEAST UNIV
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