Node topology control method and node topology control system

Abstract

The invention belongs to the technical field of communication and particularly relates to a node topology control method and a node topology control system; the node topology control method comprisesthe following steps: initializing a network, establishing an initialization pheromone matrix and randomly selecting transmission power for each node; judging whether each node is provided with at least one neighbor node; calculating pheromone, an energy heuristic value and node transmission power selection probability for each node with the neighbor node; and judging whether a topological graph formed by each node in the steps meets the connectivity of the nodes at least between a source point and an end point and obtaining an optimal transmission power combination path for each node. According to the node topology control method and the node topology control system, the topology can be reconstructed on the basis of the existing remaining nodes, so that the energy expenditure of the nodesis reduced, the life cycle of the network is prolonged, the interference of the network is reduced, the throughput of the network is improved; meanwhile, the network has certain robustness so as to effectively achieve the aims of energy conservation and energy balance.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a node topology control method and a node topology control system. Background technique [0002] Wireless ad-hoc network (mobile ad-hoc network) is a multi-hop mobile peer-to-peer network composed of dozens to hundreds of nodes, using wireless communication, and dynamically networking. In wireless ad-hoc networks, nodes rely on batteries to provide energy. Once the batteries are exhausted, the mobile nodes will fail and may cause the network to be disconnected and paralyzed. Therefore, reducing the transmission power of nodes and improving the utilization rate of batteries is a major issue in the research of wireless ad hoc networks. [0003] Nodes consume energy when they are transmitting, receiving, listening and in idle state, among which energy is consumed most during transmission, so it is of great significance to reduce the transmission power of nodes. H...

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Problems solved by technology

[0005] However, in the existing energy-saving topology control methods, either all nodes work at the maximum transmission power, resulting in a large waste of energy; or the wireless signal of each node covers other nodes, causing frequent wireless signal conflicts and reducing network throughput. quantity

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