2026-05-24T08:08:00Zhttps://keep.lib.asu.edu/oai/request

oai:keep.lib.asu.edu:node-2011952025-05-05T15:53:02Zoai_pmh:alloai_pmh:repo_items

201195 https://hdl.handle.net/2286/R.2.N.201195 http://rightsstatements.org/vocab/InC/1.0/ All Rights Reserved 2025 351 pages Doctoral Dissertation Academic theses en Sundaravarathan, Vignesh Reisslein, Martin Kim, Hokeun Siddiqui, Asif Thyagaturu, Akhilesh Arizona State University Partial requirement for: Ph.D., Arizona State University, 2025 Field of study: Computer Engineering Cross Domain Solutions (CDS) are technologies that provide strict isolation between domains, thereby avoiding information leaks and/or thefts. On the other hand, Network Slicing, a software-based abstraction approach, allows creation of multiple virtual networks in cellular networks. 5G operators leverage this aspect of network slicing to share the Radio Access Network (RAN) among them. Multiple operators sharing a common RAN increases flexibility and scalability. However, the isolation is managed by the hypervisor or controller, i.e the underlying hypervisor or controller only provides software isolation. Isolation provided by software mechanisms, such as OS, hypervisors, are prone to software-based attacks, therefore no strict isolation could be achieved when only software mechanisms are used to provide the necessary isolation. This dissertation demonstrates how a CDS can be used to provide the necessary strict isolation that network slicing fails to achieve. However, the key requirement of 5G is low-latency. Therefore, the goal is to provide strict isolation and at the same time support low-latency communications by using a recently developed Memory-based CDS (M-CDS), namely Externally-attached Shared Memory Device (ESMD) with COntrolled Shared Memory (COSM), where the ESMD is the actual hardware device and the COSM is the firmware. Using shared memory-based CDS as an interconnection bridge between ORAN functions (Centralized Unit) of different operators in 5G helps to achieve the necessary strict isolation and at the same time helps to achieve low-latency communications, as read and write operations occur in the same memory region, thereby avoiding the overhead of copying data between different address spaces. Numerical Analysis using single and multi-class stochastic knapsack is conducted to model and evaluate the performance of the ESMD with COSM in a horizontal RAN split considering storage capacity as a knapsack, write memory access rate as a knapsack, and read memory access rate as a knapsack. Computer Engineering Cross-Domain Solution Fifth Generation (5G) wireless Isolation Radio Access Network (RAN) sharing Security shared memory Shared Memory Based Cross-Domain Solution (CDS) for 5G Applications