6LoWPAN-based energy-saving data transmitting method for wireless sensor network

Abstract

The invention provides a 6LoWPAN (6Low-power Wireless Personal Area Network)-based energy-saving data transmission method for a wireless sensor network. An optimal TAN (Temporary Assembling Node) needs to be found between an information source and an information sink; firstly, the information source divides an IPv6 (Internet Protocol Version 6) into fragmentations, then transmits the fragmentations to the TAN one by one through a method of MUR, namely Mesh-under Routing, of the 6LoWPAN protocol; and the TAN assembles together the received fragmentations to the original IPv6 data packet, then fragments the IPv6 data packet, and transmits the fragmentations to the information sink node one by one through the MUR. Therefore the total energy consumption of the node transmitting data packet is reduced. The method of finding the TAN is the key of the invention, and the core of the invention is formula (19). By adopting the method provided by the invention, the energy consumption of the node transmitting data packet, the retransmission times of the data packet and the communication delay-time in the wireless sensor network are all reduced.

Description

technical field [0001] The invention relates to an energy-saving data transmission method, which is suitable for a wireless sensor network based on 6LoWPAN. technical background [0002] Wireless sensor networks usually use IEEE 802.15.4 as a communication standard, which is widely used in environmental observation, smart home, medical care, traffic monitoring and other fields. In the IEEE 802.15.4 standard, network equipment has the characteristics of low power consumption, low data transmission rate, short communication distance, and short data packet length. For example, the standard stipulates that the MTU of the link layer, that is, the Maximum Transmission Unit, has a size of 127 bytes; the maximum data transmission rate of wireless devices operating in the 2.4GHz frequency band is 250kbps; in addition to the 64-bit globally unique extended address, it also supports 16 bit short address format. [0003] IPv6 is a next-generation IP protocol designed by IETF, the Inte...

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Problems solved by technology

[0013] In order to overcome the disadvantage of excessive energy consumption caused by the excessive number of link hops between the source and the destination of the MUR routing strategy of the existing 6LoWPAN-based wireless sensor network, the present invention provides a method that effectively reduces the ability of nodes to transmit data packets. A 6LoWPAN-based energy-saving data transfer method for wireless sensor networks that consumes less data packets, reduces the number of retransmissions and communication delays

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