Non-terrestrial networks (NTNs) will complement terrestrial networks (TNs) in 5G and beyond, which can be attributed to recent deployment and standardization activities. Maximizing the efficiency of NTN communications is critical to unlock its full potential and reap its numerous benefits. One method to make communications more efficient is by the usage of multi-connectivity (MC), which allows a user to connect to multiple base stations simultaneously. It is standardized and widely used for TNs, but for MC to be used in the NTN environment, several challenges must be overcome. In this article, challenges related to MC in NTNs are discussed, and solutions to the identified challenges are proposed.

翻译：非地面网络（NTN）将补充5G及未来通信中的地面网络（TN），这得益于近期的部署与标准化活动。最大化NTN通信效率对于释放其全部潜力并获取诸多优势至关重要。提升通信效率的一种方法是采用多连接（MC）技术，该技术允许用户同时连接多个基站。尽管MC已在TN中实现标准化并广泛应用，但在NTN环境中应用MC仍需克服若干挑战。本文探讨了NTN中与MC相关的挑战，并针对已识别的挑战提出了解决方案。