Research On Cooperative Communication And Information Security Technology In Mobile Communication Network

In today’s society, the essence of information security is in the process of communication, the protection of information system or effective resources information network from damage, threat, the interference of all kinds, from another layer of meaning, is to guarantee the security of information. According to the definition of international organization for standardization, information security includes information reliability, availability, confidentiality and integrity.This paper mainly introduces the network coding technique, starting from the concept of network coding, we also discuss the advantages and disadvantages of the basic idea of network coding and network coding, then the basic network of existing coding techniques are introduced in this paper. At the same time, research on related theory model of user cooperation, compared with traditional user cooperation strategy, is studied in this paper and opportunistic network coding strategy for network coding, and ultimately to multiple user cooperative model from the evolution of cooperation model two users.To study a contradiction problem this article mainly aims at the relay selection algorithm in cooperative communication networks operation efficiency and optimality, proposed in amplify and forward model, the error rate of fast relay selection algorithm based on. And the simulation of forwarding algorithm with the relay selection algorithm, full search all relay nodes to participate in forwarding algorithm and pre select an optimal node performance comparison.Based on the communication of password authenticated key agreement protocol, the structure and communication process of logical key tree in password based group key agreement to combine, propose a secure and efficient protocol, but also has the function of this group key agreement protocol authentication. Because the password encryption technology is introduced, the protocol has low computational overhead, but also realize the protocol authentication function.