Wireless relay sensor network optimal transmission strategy method

Abstract

The invention relates to a wireless relay sensor network optimal transmission strategy method. According to the wireless relay sensor network optimal transmission strategy method, in accordance with inspiration of a wireless sensor network technology and a relay communication technology, a distributed amplification and forwarding wireless sensor network with an amplification and forwarding relay is disclosed, sensors observe dynamic parameters in a noise environment, an observation result is amplified and forwarded to the relay, the relay amplifies and forwards received observed values to an FC (fusion center), and the FC carries out parameter tracking at a kalman filter by the observed values; and the problem how to find the optimal gain of sensor transmission and minimize total power and independent power consumption of the sensors under the constraint of an MSE (mean square error) of parameter estimation is solved.

Description

technical field [0001] The invention relates to wireless sensor network, relay communication and other technologies, in particular to a wireless relay sensor network optimal transmission strategy method. Background technique [0002] Sensor nodes are generally powered by built-in batteries, which have limited energy. They are large in number and work in an unattended environment that is difficult to reach for a long time, and it is not easy to replace the batteries. However, the survival time of the network is as long as several months or even years. Once the energy of the node is exhausted, it will immediately withdraw from the network, which will directly affect the life cycle of the network and the realization of the overall function. Therefore, an efficient and optimized power transmission strategy is of great significance to ensure network coverage, reduce node power consumption, and optimize network performance. [0003] As a powerful space diversity technology, relay...

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes a wireless relay sensor network optimal transmission strategy method to solve the problem in the prior art that (1) the sensor nodes in the wireless relay sensor network system are powered by built-in batteries and the energy is very limited; (2) The number is huge and the long-term work is in an unattended environment that is difficult to reach, and it is difficult to replace the battery; (3) the survival time of the network is as long as several months or even years. Once the energy of the node is exhausted, it will immediately exit the network (4) The introduction of communication system relay can greatly reduce the transmission power consumption of wireless terminals, reduce interference and prolong the battery life of terminal equipment

Images