SVM-based wireless terminal security access method

Abstract

The SVM-based wireless terminal security access method is characterized by comprising the following steps: 1, establishing a wireless network security problem model based on a communication scene of awireless terminal and a wireless base station, and establishing a channel feature vector based on the wireless network security problem model and a frame message received by the wireless base station; 2, checking the channel feature vector of the frame message by using a pre-trained SVM authentication model, and judging whether the frame message is a legal signal or not; and 3, determining that the wireless terminal sending the at least one frame message is a legal terminal based on judgment on whether the at least one frame message is a legal signal. Based on the method provided by the invention, the frame message sent by the wireless terminal accessed to the wireless base station can be checked by improving the SVM parameter combination optimization method of differential evolution andthe differential evolution method of control parameter self-adaptive improvement, so that the legal terminal can be effectively judged.

Description

technical field [0001] The present invention relates to the field of wireless communication, and more specifically, relates to a secure access method of a wireless terminal based on SVM. Background technique [0002] At present, the 5G communication system has been widely used, but the 5G communication system also faces a series of security challenges in the application process. On the one hand, the security challenges of the 5G system come from the inheritance of the 5G system from the 3G and 4G communication systems, such as the clear text transmission of identity information and the leakage of authentication vectors. On the other hand, the evolution of network architecture also brings many new challenges. For example, it is difficult for the core network located in the security domain to provide security protection for the access network, and the heterogeneous integration of the network will bring about problems such as incompatibility of security mechanisms. [0003] S...

AI Technical Summary

Problems solved by technology

However, in the 5G communication system, the change of system characteristics not only makes the theoretical foundation of the default physical layer security based on these security schemes need to be further demonstrated, but also makes it difficult to guarantee the security of the transmission key channel itself.

Security solutions that rely on communication upper-layer protocols for information encryption and identity authentication also consume a lot of system resources and increase communication delays

At the same time, the authentication algorithm that relies on key generation to encrypt and decrypt information is also easily cracked by malicious attackers

Images