Abstract

Cloud radio access network (C-RAN) is a key technology for the new-generation mobile network (5G). Multi-wavelength passive optical networks (PONs) such as wavelength division multiplexing (WDM) and time wavelength division multiplexing (TWDM) PONs are outstanding solutions for providing a sufficient bandwidth to support mobile fronthaul in C-RAN-based 5G architecture. In this paper, a joint allocation framework for multi-wavelength PONs fronthaul uplink resources and C-RAN radio interface uplink resources is presented. From the principle that the uplink resource allocation in mobile networks is an NP-hard optimization problem, this paper proposes a novel uplink scheduling algorithm based on reinforcement learning (RL). The performance of the algorithm is evaluated with numerical simulations and compared with two other algorithms from the literature; namely genetic algorithm (GA) and tabu search (TS) algorithm. The simulation results show that the new algorithm achieves higher system throughput, faster convergence and lower scheduling latency compared to the two other algorithms. Also, show that RL-based adaptive allocation of fronthaul transport block size based on actual radio resource block capacity can significantly reduce the capacity required on fronthaul link and decrease the total end to end uplink scheduling latency compared to the static allocation method.

© 2019 IEEE

DRL-assisted joint allocation of antenna, radio, and front-haul resources in TWDM-PON-based NG-RANs with mMIMO-enabled beamforming

Min Zhu, Yunwu Wang, Jiahua Gu, Xiaofeng Cai, Xiang Liu, Weidong Tong, Yuancheng Cai, and Jiao Zhang
J. Opt. Commun. Netw. 15(5) 241-254 (2023)

Resource Allocation Optimization for Time and Wavelength Division Multiplexing Passive Optical Network Enabled Mobile Fronthaul With Bitrate-Variable Compressed Common Public Radio Interface

Gang Wang, Rentao Gu, and Yuefeng Ji
J. Opt. Commun. Netw. 8(6) 417-426 (2016)

Multi-dimensional resources allocation based on reconfigurable radio-wavelength selective switch in cloud radio over fiber networks

Hui Yang, Ao Yu, Xudong Zhao, Qiuyan Yao, Jie Zhang, and Young Lee
Opt. Express 26(26) 34719-34733 (2018)

Low-Latency High-Efficiency Mobile Fronthaul With TDM-PON (Mobile-PON)

Siyu Zhou, Xiang Liu, Frank Effenberger, and Jonathan Chao
J. Opt. Commun. Netw. 10(1) A20-A26 (2018)

C-RAN Uplink Optimization Using Mixed Radio and FSO Fronthaul

Khaled Ahmed and Steve Hranilovic
J. Opt. Commun. Netw. 10(6) 603-612 (2018)