5G NR (New Radio) incorporates concepts of novel technologies such as spectrum sharing, D2D communication, UDN, and massive MIMO. However, providing security and identifying the security threats to these technologies occupies the prime concern. This paper intends to provide an ample survey of security issues and their countermeasures encompassed in the technologies of 5G NR. Further, security concerns of each technology are defined mathematically. Thereby defining the impact on the factors of security. Moreover, a methodology is developed in which the influence on security due to artificially generated rain and artificially generated dust on the wireless communication network is studied. By doing so, an attacking scenario is identified, where a half-duplex attack in D2D communication is attained. Half-duplex attack specifies the attack solely on the downlink to spoof the allocated resources, with reduced miss-rate. Thus, ultra-reliable and adequate advances are required to be addressed to remove the obstacles that create a hindrance in achieving the secured and authenticated communicating network.

5G NR（新无线电）融合了诸如频谱共享，D2D通信，UDN和大规模MIMO等新颖技术的概念。但是，提供安全性并确定对这些技术的安全威胁是最主要的问题。本文旨在对5G NR技术中包含的安全问题及其对策进行充分的调查。此外，每种技术的安全性考虑都在数学上定义。从而定义对安全因素的影响。此外，开发了一种方法，其中研究了由于人为产生的雨水和人为产生的灰尘对无线通信网络的影响而对安全性的影响。通过这样做，确定了攻击情形，其中实现了D2D通信中的半双工攻击。半双工攻击仅在下行链路上进行攻击，以欺骗分配的资源，同时降低了丢失率。因此，需要解决超可靠和充分的进步以消除在实现安全和认证的通信网络时产生障碍的障碍。