A Uplink Power Control Method Based on Neighbor Cluster Interference

Abstract

The invention discloses an uplink power control method based on adjacent cluster interferences; the features are that the method comprises the following steps: 1, initializing a network system; 2, determining an accumulated maximum interference signal power received by a k th cluster head; 3, determining a minimum reception power requested by the k th cluster head; 4, determining the minimum reception power requested by the k th cluster head broadcasting to in-cluster nodes; 5, determining an emission power of the in-cluster node. The method can reduce interferences between adjacent clusters in an underwater wireless sensing network, thus improving the wireless communication quality of the whole network.

Description

technical field [0001] The invention relates to underwater wireless sensor network communication technology, in particular to an uplink power control method based on adjacent cluster interference. Background technique [0002] The underwater wireless sensor network is composed of underwater wireless network sensor nodes deployed in the monitoring area. The nodes use a cooperative method to sense, collect and process the information of the perceived objects in the network coverage area. It has good application prospects in forecasting and other fields. Due to the limited energy reserve of the underwater wireless network and the need to collect information at different depths and scales of the ocean, the underwater wireless network node equipment needs to transmit the data collected at different depths to a remote sink node (Sink). Different from traditional wireless networks, the communication between them often can only rely on multi-hop routing. Underwater wireless sensor ...

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Problems solved by technology

[0004] Although this hierarchical network topology reduces the load of cluster heads in the hot zone, the coverage area of ​​clusters far from the Sink, that is, high-level clusters, is larger than that of the clusters that are closer to the Sink, that is, low-level clusters, which leads to high-level clusters and high-level clusters. Nodes in the middle of the adjacent low-level clusters that are far from the cluster coverage boundary are far away from the high-level clusters and close to the adjacent low-level clusters. Because these boundary nodes are far away from their corresponding cluster heads and in order to compensate for the loss of their signals on the propagation path, these boundary nodes Nodes need to transmit a large signal power to ensure that the power reaching the cluster head meets the minimum detection requirements, but the signal propagation is spatially diffuse and these border nodes are closer to their adjacent low-level clusters, resulting in the transmission signals of these border nodes reaching The interference power of its adjacent low-level clusters is large

Therefore, the interference introduced by this network structure will increase the outage probability of the hot zone, thereby reducing the average communication quality of the entire network

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