Читать книгу Shaping Future 6G Networks - Группа авторов - Страница 26

Trust has become a major aspect for the adoption of new mobile networking technologies, as they become critical infrastructures. This appears even more important when we consider the increasing interworking of different network domains. Since 2G, interconnection is standardized between mobile network operators for the roaming features. 5G introduces a new step with various private 5G networks that might be partly interconnected with public 5G networks. We believe this will increasingly be the case in future 6G networks, with various players providing connectivity and resources to deliver 6G services. Chapter 11 provides an overview of issues, requirements, and solutions to achieve a trustworthy inter‐domain collaboration in software‐defined environments. Authors focus on automating the delivery of multi‐domain services. They also discuss a set of challenges to address for the networking community to achieve collaborative 6G networks: security of operations, consistency of data and decisions, performance, and scalability.

One of 5G’s key achievements is the flexible network architecture defined by disaggregated network functions. This disaggregation has some tradition in the core network but will extend with the adoption of OpenRAN disaggregation principles also within the access network. Chapter 12 introduces more precisely the challenges to build such renewed 6G access networks. Starting from Cloud‐RAN and mobile edge computing, authors introduce the rise of intelligence and openness of the RAN components, leading to RAN disaggregation on all its dimensions (radio, compute, management plane, control plane). In line with the OpenRAN architecture, RAN intelligent controllers should be used as the key building block to enable both near real‐time and non‐real‐time 6G services. However, challenges remain to be tackled to shift from traditional tightly coupled RAN to disaggregated RAN, as for example: customized data collection and control, radio resource management, and air interface protocol processing decoupling, but also the need of open API to build an applicative ecosystem on the top of these RAN intelligent controllers.