## 5 Overview of Existing Technique
\begin{table}
\begin{tabular}{p{42.7 pt} p{42.7 pt} p{42.7 pt} p{42.7 pt} p{42.7 pt} p{42.7 pt}} \hline
**Ref.** & **Technique** & **Core Term** & **Core Idea** & **Solution** & **Drawbacks** \\ \hline
2- & Security & Approaches & & & \\ \hline
[108] & Mobility management system design. & Virtualized network. & Virtual to physical address encapsulation capabilities, and mobility is implemented through a flow table entry. & User and mobile node independently rendered changes in network availability under testable to the user. & Better control of heterogeneity and service scalability are provided by service decoupling. \\ \hline
[109] & Data privacy. & Communication system security. & Discussed the reasons why IMSI catheter protection is not given in 3G or 4G networks. & These might become adversaries against identity and location privacy. & In both situations, it is the same security, but since it is for different networks, there are different reasons for offering the protection. \\ \hline
[110] & 5 GReasoner. & Security models. & Control-plane protocol protocols spanning across various layers of the 5G protocol stack. & Behaviour-specific abstraction enables an automated analysis of 5G Reasoner. & To integrate additional critical control-layer protocols. \\ \hline
[111] & Bootstraping in Cellular Networks. & Security and privacy. & Precomputation-based digital signature creation techniques and three-dimensional optimizations DPKI technique, protocol, and cryptographic scheme. & Examine cryptography-backed authentication mechanisms to prevent adversaries from enticing unsuspecting cellular devices to connect to malicious base stations. & To create a tailored cellular IoT scheme with 5G URLLC protocol. \\ \hline
[112] & Software-Defined Security. & Software-Defined Security. & Proposed to integrate security into the slice life cycle, effecting the administration and orchestration of the virtualization/softwarization architecture. & Security architecture is made up of built-in security features based on the ability to combine enforcement and monitoring operations within the software-defined network infrastructure. & The problem is in properly connecting network and computing resource control with network control. \\ \hline
[113] & Data Origin Authentication. & Trust. & Studied the security provided for group communication in 5G networks. & Two attack scenarios were created to highlight an opponent that gains illegitimate data access via a stated source of authenticity. & Deferred signing class might be used to conserve computing resources but increasing communication costs. \\ \hline
[114] & Security Event Management. & Security and privacy. & To deliver security monitoring and correlation capabilities to mobile network operators, infrastructure service providers, and tenants, verticals, and horizontal applications. & Ensured automatic security operations and security services management using 5G network automated SLA. & Find strategies to control security in network slices. concentrate on metrics to estimate deployment and configuration impact on performance needs. \\ \hline
[115] & Privacy & Network, architecture. & Presented a detailed analysis comparing the security of 5G wireless network systems to 4G cellular networks. & Proposing a study on a security sharing method for 5G & Security is not required, so saying that it is a disadvantage would not hinder the system in checking for it. \\ \hline
[116] & AKA protocol. & Security and privacy. & Models in the AKA family: 5G AKA. Extract 5G requirements from the 3 GPP standards and discover missing security targets. & Utilize Tamarin to perform a complete security audit of the model with respect to the 5G security goals. & To see if AKA protocol versions such as 3G and 4G can deliver security benefits as compared to 5G AKA \\ \hline
[117] & 5G HetNets. & Security and privacy. & Designing a new handover authentication method for SDN aided 5G HetNets. & Proposed a mutual physical authentication system for 5G HetNets. & Weighing parameters differ in simulations. Additionally, an evaluation is conducted using different SNRs and weighting authentication technique. \\ \hline \end{tabular}
\end{table}