Wireless transducer network energy saving method based on cross layers

A wireless sensor and network technology, applied in wireless communication, energy-saving ICT, data exchange network, etc., can solve problems such as unsatisfactory energy-saving effect, low node energy utilization rate, and no consideration of the working cycle of MAC layer nodes, so as to prolong the survival time. period and achieve the effect of information sharing

Inactive Publication Date: 2008-07-09
BEIHANG UNIV
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Problems solved by technology

Therefore, it can be seen that the method of the MAC layer only focuses on solving the energy consumption problem of this layer, and does not consider the routing information from the network layer.
The routing protocol at the network l

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  • Wireless transducer network energy saving method based on cross layers
  • Wireless transducer network energy saving method based on cross layers
  • Wireless transducer network energy saving method based on cross layers

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[0027] Figure 1 describes the maintenance process of the neighbor table. Research shows that the probability of a sensor network node successfully receiving a data packet mainly depends on the receiver's signal strength, which is generally measured by the Received Signal Strength Index (RSSI). At the same time, the received signal strength index (RSSI) value has a great relationship with the transmission power between nodes, and the study found a linear relationship. Therefore, first set a threshold of RSSI value for the current node i, a threshold for the node to successfully receive data packets, and a set of transmission powers of different levels, and at the same time, the node i uses this set of transmission powers of different levels to transmit power to other wireless sensor networks. The node broadcasts data packets. After node i+1 receives this group of data packets sent with different levels of transmission power, the physical layer of node i+1 obtains the received signa...

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Abstract

The invention provides an energy saving method for wireless sensor networks based on cross layers and starting from a network layer and a MAC layer of the wireless sensor network and taking the comprehensive consideration of the effect of the two layers on the energy consumption problem of the wireless sensor network, the invention firstly collects related information from the MAC layer to build and maintain a neighboring table for every node in the wireless sensor network; then, the invention finds a router of a destination node (namely a convergent node), which consumes the least energy for every node of the wireless sensor network by making use of the neighboring table of every node and the related information collected from the MAC layer so as to build a routing table for every node; finally, the data packet is forwarded from a source node to the destination node (namely the convergent node) by making use of the built routing tables. The working mode of the node is determined in the process of data packet and forwarding according to the routing information and at the same time, the energy consumption problems such as collision and crosstalk and so on existed in the MAC layer are solved.

Description

technical field [0001] The invention relates to the field of wireless sensor network energy management, in particular to a cross-layer-based method for solving the problem of wireless sensor network energy consumption. Background technique [0002] As a new means of information perception and acquisition, wireless sensor network is considered to be one of the technologies that will have a great influence on the 21st century because of its own characteristics and wide application prospects. Survivability is one of the basic issues to be considered first in wireless sensor networks. In wireless sensor networks, nodes are usually powered by batteries with extremely limited capacity, and it is often inconvenient or even impossible to charge or replace batteries, which will lead to the failure of sensor network nodes and ultimately the collapse of the entire network. Therefore, how to save the power consumption of network nodes and prolong the network lifetime during network use...

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Application Information

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IPC IPC(8): H04L12/10H04L12/56H04W52/02
CPCY02B60/50Y02D30/70
Inventor 白跃彬刘淑娟罗成
Owner BEIHANG UNIV
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