## 1 Introduction
### Resource Allocation Issue for the NOMA System  
For NOMA systems, optimizing performance requires efficient resource allocation, which involves power allocation (PA), subcarrier-user assignment (SUA), or user pairing (UP). UP refers to the selection of multiplexed consumers for each subcarrier, while PA involves the allocation of the total power budget among the subcarriers and the distribution power per subcarrier among users sharing the same subcarrier. UP and PA structures aim to accomplish various performance metrics, including:Increasing the overall scheme ability, thereby enhancing SE and EE. Decrease the likelihood of outages. Improve the data transfer rate for slow clients. Improve the effectiveness of the SIC  
Increase the fairness between users  
Reduce energy use as much as possible. NOMA-enabled MEC has some protocols and practices, which are discussed as follows:  
1. _3 GPP Standards_: The 3 rd Generation Partnership Project (3 GPP) is a worldwide standard-setting organization establishing mobile telephone technology protocols. NOMA-MEC is being investigated as a component of 3 GPP's 6G advancement. 6G requirements for NOMA and MEC are right now being designed. For instance, 3 GPP is developing a NOMA-based network layer specification for 6G, which is anticipated further to boost the wireless transmission system's efficacy and bandwidth. NOMA-MEC technological advances are additionally being investigated for the subsequent infrastructure of the 6G system. 2. _IEEE Standards_: IEEE is an accredited body that creates norms for numerous technologies. IEEE is investigating NOMA-MEC as a component of the ongoing creation of the IEEE 802.11 norm, the accepted norm for wireless local area networks (WLANs). In particular, IEEE 802.11 ax(Wi-Fi 6) and IEEE 802.11 be (Wi-Fi 7) are being created to facilitate NOMA-MEC, which is anticipated to boost the speed and effectiveness of WLANs. 3. _European Commission (EC) Policy Framework_: The EC has put forward guidelines for implementing networks capable of supporting 5G and, afterwards, encompassing the encouragement of periphery computing and the advancement of spectrum-use protocols. To guarantee the competitive edge of European enterprises, the regulatory structure further emphasizes the necessity to support creativity and investment in cutting-edge technologies like NOMA-MEC. 4. _National Institute of Standards and Technology_: The NIST in the United States released policies applicable to the NOMA-MEC system aimed at edge computing safety. These policies involve suggestions for safeguarding edge technology, guaranteeing safe connections within edge technology and the cloud, and protecting the confidentiality of data. Therefore, regulatory authorities and other agencies are proactively creating NOMA MEC-related standards and policies to facilitate the sequent application of this innovation effectively and safely. With 6G's ability to handle numerous edge applications and facilities with reduced latency and power utilization, edge computing (EC) has become an essential constituent of 5G communication [50]. Extending cloud computing facilities to the system edge fetches these facilities quicker to consumer devices [51]. Conventional EC's three main computing technologies are MEC, cloudlets, and fog computing (FC) [52; 53; 54]. MEC is considered to deliver facilities to mobile consumers despite permitting them to access regional resources. To extend the pertinency of MEC to diverse structures (e.g., immobile access expertise, Wi-Fi, etc. ), the word \"mobile\" has been dropped since 2016. MEC has been renamed Multi-Access Edge Computing (MAEC) by the European Telecommunications Standards Institute's Industry Specification Group (ETSI ISG) to consider best the increasing concentration of MEC among non-cellular carriers [55]. MEC is a significant technology for the subsequent wave of wireless systems [56].