Network Selection Algorithm Based on Hilbert Space Vector Weighting
In order to improve the service completion rate of mobile nodes and the efficiency of network resource allocation in maritime heterogeneous wireless network,a network access selection algorithm based on Hilbert space vector assignment is proposed to address the problems of poor matching between existing network selection algorithms and service demands,and low service completion rate in dynamic environment.The algorithm adopts the network-service matching model based on Hilbert space,maps the network characteristics and service requirements to the same space,and measures whether the network meets the service requirements in the same coordinate system;at the same time,it adopts the pre-switching network selection algorithm based on the Technique for Order Preference by Similarity to Ideal Solution(TOPSIS)method,and introduces the network-service matching weights to correct the normalization matrix of the distance-to-preferred-solution method,so as to ensure that the selected network matches the service requirements,and to ensure that the network matches the service requirements.This ensures that the selected network matches the service requirements and overcomes the problems of traditional network selection where the service requirements are less considered and the network characteristics and service requirements are difficult to be measured uniformly.In addition,the network switching control algorithm based on spatial distance is adopted,and matching weight and spatial distance are introduced into the network switching control to ensure the continuity of service transmission and improve the service completion rate in the dynamic environment.Simulation results show that compared with the comparison algorithm,the service completion rate of this algorithm is improved by at least 6.81%,which effectively improves the service transmission capacity and smoothness of the network,and indirectly realizes the effective allocation of network resources.