Decentralized Protocol for Organizing Sustainable Interaction between Subscribers in Networks with High Dynamics of Topology Changes

Abstract

Emergency services often have to carry out rescue and liquidation operations in the absence of centralized communications. The inability to ensure stable communication between members of the rescue unit significantly reduces the quality of work. Moreover, in modern realities, stable communication means not only voice exchange, which can be provided by shortwave radio transmitters, but also intensive exchange of large volumes of traffic. The use of standard solutions based on standard network equipment (Wi-Fi, satellite communications, etc.) and existing algorithms for ensuring quality of service in the conditions under consideration does not allow quickly ensuring information exchange between heterogeneous subscribers. Moreover, operation in high-Hz bands can be very difficult in the presence of obstacles, which reduces the overall coverage area and the quality of data transmission. We propose a network layer routing protocol designed to organize decentralized communication in an emergency service department, where subscribers have different degrees of mobility and types of transmitted traffic. This protocol includes algorithms for connecting to the network, detecting optimal and alternative communication routes, and transmitting and balancing traffic along the found routes. The original route search algorithm analyzes the performance of communication channels and determines all possible paths for transmitting traffic between subscribers. Using the route evaluation function based on gradient boosting of decision trees, optimal and alternative communication routes are formed, and when transmitting data, traffic balancing is performed based on the received information. An experimental study of the proposed protocol showed an improvement in the speed of deployment and quality of service in scenarios with varying degrees of subscriber mobility.