Time division multiplexing passive optical networks (TDM-PON) have emerged as a promising technology for mobile fronthaul for small cell CRAN. The performance of such TDM-based PON mobile fronthaul for small cell CRAN greatly depends on efficient dynamic bandwidth allocation (DBA) mechanisms. In this paper, a novel DBA mechanism based on the concept of dynamic service interval for ITU-based TDM-PON (XG-PON) for mobile fronthaul has been proposed. The proposed scheme is implemented using network simulator −3 (NS-3) simulation tool for evaluation of network performance parameters. The performance evaluation of the proposed DBA against the existing schemes such as optimized round robin (ORR) and Group-GIANT DBA shows a significant improvement in upstream mean delay, packet loss ratio and grant-request ratio. In addition to this, the proposed scheme shows that larger number of ONU(RRH) can be supported by the network for front haul uplink traffic transmitted via XG-PON in small cell CRAN.

时分复用无源光网络 (TDM-PON) 已成为小型蜂窝 CRAN 移动前传的有前途的技术。这种用于小型蜂窝 CRAN 的基于 TDM 的 PON 移动前传的性能在很大程度上取决于有效的动态带宽分配 (DBA) 机制。在本文中，针对移动前传的基于 ITU 的 TDM-PON (XG-PON)，提出了一种基于动态服务间隔概念的新型 DBA 机制。所提出的方案是使用网络模拟器-3 (NS-3) 模拟工具来实现的，用于评估网络性能参数。所提议的 DBA 针对现有方案（如优化循环 (ORR) 和 Group-GIANT DBA）的性能评估表明，上行平均延迟、丢包率和授权请求率有显着改善。除此之外，