Cross-layer optimization method of wireless sensor network charging strategy based on serial interference cancellation
A technology of serial interference elimination and cross-layer optimization, applied in wireless communication, network topology, electrical components, etc., can solve the problems of wireless sensor network communication performance and working life limitation, unfavorable application and development, and network throughput is not considered. , to achieve the effect of improving network throughput, improving channel utilization, and reducing energy consumption
Active Publication Date: 2021-07-27
HEFEI UNIV OF TECH
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Problems solved by technology
In the study of optimizing network communication performance, the energy shortage caused by optimization is often ignored; in the research focusing on energy issues, network throughput, channel utilization, etc. are not considered, which makes the communication performance and working life of wireless sensor networks Restricted, not conducive to the application and development in practical scenarios
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[0058] In this embodiment, a wireless sensor network in a cross-layer optimization method of a wireless sensor network charging strategy based on serial interference cancellation SIC includes: N sensor nodes, a maintenance station, a wireless charging device WCE, and a base station B; the base station is The aggregation node of the sensing data collected by the sensor nodes, the maintenance station is the place where the wireless charging equipment WCE performs maintenance after completing a round of energy replenishment work. In the sensor network, each node is equipped with the same type of wireless rechargeable battery; the maximum capacity of the battery is E max And the initial power is full; in addition, it means that the minimum energy of the battery at the sensor node is E min (to ensure that the sensor nodes can work normally). Wireless charging equipment WCE starts from the service station, traverses all sensor nodes in the network at a certain speed and charges th...
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The invention discloses a cross-layer optimization method of wireless sensor network charging strategy based on serial interference elimination, which includes: clustering nodes in the network, adopting a time slice scheduling mechanism in the data link layer, and combining communication in the network Constrained by channel capacity and physical layer, by controlling the received signal of the base station with serial interference cancellation function, concurrent communication of nodes in the same cluster is realized; wireless energy transmission technology is used to periodically supply energy to sensor nodes, and through analysis The working mode of the node and the wireless charging device WCE, establish a cross-layer optimization problem to maximize the station time ratio of the WCE, and transform it into an equivalent linear programming model to solve the power control strategy of the sensor node and the periodic working strategy of the WCE . The invention can effectively improve the network throughput of the sensor network and increase the channel utilization rate while prolonging the network life cycle, thereby improving the communication capability of the sensor network.
Description
technical field [0001] The invention relates to the fields of interference management technology, wireless energy supply technology and cross-layer design in wireless sensor networks, in particular to a cross-layer optimization method for wireless sensor network charging strategies based on serial interference elimination. Background technique [0002] In wireless sensor networks, widespread communication interference limits the network throughput and channel utilization, seriously affecting the communication performance of wireless sensor networks. Furthermore, each sensor node is typically powered by its battery, but battery power is limited by the size and cost of the sensor node. Therefore, communication interference and energy issues seriously affect the performance and development of wireless sensor networks. [0003] In traditional wireless network transmission, collisions occur when multiple nodes send data to the same node at the same time. This will result in the...
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IPC IPC(8): H04W24/02H04W52/02H04W84/18
CPCH04W24/02H04W52/0203H04W84/18
Inventor 徐娟徐兴鑫石雷丁煦徐鹏飞史永方
Owner HEFEI UNIV OF TECH