Frequency Domain Resources Allocation and Flow Control for C-RAN Enabled Dual-Connectivity Networks
J. Liu, Jinhe Zhou · IEEE Transactions on Communications · 2024
Spectrum resource allocation and flow control are important considerations in dual-connectivity (DC) technology. Currently, limited research exists on spectrum resource allocation and flow control when user equipment (UE) employs DC mode within the cloud radio access network (C-RAN) architecture. Therefore, we propose a spectrum resource allocation scheme for DC mode in C-RAN architecture. The scheme formulates the problem as an optimization to maximize a utility function, allocating spectrum resources based on an operator’s revenue, UE’s service priority, signal-to-interference-plus-noise ratio (SINR) at the UE’s channel, and system throughput. We also proposed a flow control method for various application scenarios in 6G wireless networks. The method selects transmission path for downlink data based on delay estimation and the channel’s SINR. Simulation results demonstrate the proposed scheme’s effectiveness in improving frequency resource utilization, operator’s revenue, and system throughput compared to existing schemes, while significantly reducing bit error rate for enhanced ultra-reliable low latency communication with minimal transmission delay increase.