Research On The Selection Of Vehicular Ad-hoc Network Group Manager

The Vehicular Ad hoc Network(VANET)is a new type of wireless communication networks,transmitting data information through multi-hop mode.As an important part of the future traffic system,it provides drivers with real-time road information,can reflect road conditions beyond the horizon,not only guarantees traffic safety but also improves traffic efficiency,reduces the occurrence of traffic accidents,and thus causes industrial Wide attention in the academic field.As the core structure of the VANET,the vehicle essentially communicates with other nodes in the network.At the same time,VANET often manages communication through groups to achieve regulatory purposes.Based on the above characteristics,VANET has problems in improving the driving environment,such as passive forwarding data and leaking location privacy.This paper presents a solution to the VANET group research and system analysis of privacy requirements.The following are the main research tasks:1.Introduce the main contents of the vehicle self-organizing network and analyze the research status of group signature schemes in the privacy protection of vehicle-mounted ad hoc networks.2.Since the communication units in VANET are transmitted over short distances,the communication range is limited.Therefore,it is necessary to transfer data packets in a mutually forwarded mode.However,vehicles belonging to different private users may have some users who are reluctant to forward data due to their own expenses.If a large number of such users appear in a group at the same time,the performance of the network will be greatly affected.In this regard,this paper proposes a "honor value" calculation method to motivate the vehicle to solve the problem of vehicle forwarding information is not positive.Through experimental simulation of the throughput ratio of the solution,the results show that this solution effectively improves the network data transmission rate.3.The open nature of VANET itself is easily exposed to the danger of privacy leakage and the mutual cooperation between vehicles will often form geographical groups.Some malicious vehicles may steal relevant group information by impersonating legitimate users.Inorder to solve such problems,a group manager selection model that uses "honor value" to evaluate the vehicle's credibility is proposed.This scheme obtains "honor value" through vehicle forwarding efficiency,and calculates vehicle credibility based on historical "honor value".The vehicle trustworthiness and group signature key mapping list are established.At the same time,the scheme uses RSA algorithm as the basis of the group signature scheme,selects a high-confidence vehicle as the group signature administrator,and is responsible for group establishment and group key management.After experimental simulation analysis,the results show that the feasibility of the implementation of the program not only can effectively reduce the roadside infrastructure unit power consumption,calculation load but also can achieve conditional location privacy protection,well with the dynamic characteristics of VANET,expand the group signature The scope of application of the program in the vehicle mounted network.