Compressed sensing link quality estimation method based on intertidal wireless sensor network
A wireless sensor and link quality technology, applied in the field of link quality estimation based on compressed sensing, can solve the problems of high energy consumption, low reliability, and poor application, and achieve the effect of reducing energy consumption and prolonging the life of the system
Active Publication Date: 2020-08-25
ZHEJIANG UNIV
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Due to the drastic changes in the intertidal environment, these traditional link quality estimation methods also show high energy consumption and low reliability due to the strong dynamics of the link, so they cannot be well applied to the intertidal zone. In wireless sensor network
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[0017] The present invention will be further described below in conjunction with the accompanying drawings. figure 1 The execution flow of the present invention is shown. The compression sensing link quality estimation method based on the intertidal zone wireless sensor network includes the following steps:
[0018] Step 1: Select the sampling rate according to the actual deployment environment. The sampling rate refers to how often the measurement node measures the link quality. For a general network, every time a node wakes up, it will measure the link quality in multiple networks. In this case, the sampling rate is 1. The size of the sampling rate determines how much energy is saved and the accuracy of the restored link quality matrix. The lower the sampling rate, the more energy can be saved, but the accuracy of the recovered link quality matrix will also be reduced. Therefore, the sampling rate (s) cannot be set lower than 0.6.
[0019] Step 2: The base station node ...
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The invention discloses a compressed sensing link quality estimation method based on intertidal wireless sensor network, comprising the steps as follows: 1) setting a sampling rate according to the intertidal period; 2) broadcasting the scheduling policy by a base station node; 3) measuring the link quality according to the scheduling policy and transmitting the link quality back to the base station according to a normal node; 4) rebuilding a link quality matrix; and 5) updating the router. The invention sets a lower link quality sampling rate by using the intertidal tide cycle feature to measure the link quality, and recovers exact and complete two paths of quality by using the compressed sensing technology, thereby, during the whole process, greatly reducing the energy consumption causedby a full-measurement mechanism in the traditional strategy, acquiring an exact link quality matrix by using less energy consumption, and effectively prolonging the service life of the wireless sensor network.
Description
technical field [0001] The invention belongs to the field of wireless sensor networks, and in particular relates to a link quality estimation method based on compressed sensing. Background technique [0002] A wireless sensor network usually consists of a base station with unlimited energy and strong computing power and a large number of common sensor nodes. According to the size of the deployment environment, nodes can exchange data through single-hop or multi-hop wireless communication technology. At present, wireless sensor networks have been widely used in environmental monitoring, smart cities, smart homes and other fields, such as forest fire monitoring using wireless sensor networks. [0003] The present invention is aimed at the wireless sensor network deployed in the special environment of the intertidal zone. The intertidal zone refers to the area between the low tide line and the high tide line of sea water, which is the habitat of mussels and other organisms. ...
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IPC IPC(8): H04B17/309H04B17/373H04W4/38
CPCH04B17/309H04B17/373H04W4/38Y02D30/70
Inventor 徐文渊冀晓宇周歆妍
Owner ZHEJIANG UNIV