In this work, different heuristic and optimization algorithms are proposed for downstream wavelength scheduling in ring-based WDM-PON mobile backhaul networks, where optical networking units (ONUs) are integrated with base stations (BSs). The main objective of this work is to improve the time delay of the packet delivery from the infrastructure to the end-users for both fixed and wireless traffic. This is achieved through dynamic wavelength scheduling and sharing techniques in a converged ring-based WDM-PON access architecture by taking into account the priorities of the data sent and also the cooperation area for mobile users between adjacent ONUs/BSs. Further, an integer linear program (ILP) was developed for wavelength selection, to be used as a benchmark when comparing with the two proposed algorithms. All heuristic algorithms and the optimization algorithm are examined under different traffic load and queue size scenarios to ascertain the network's performance in terms of maximum packet delivery delay.

在这项工作中，针对基于环的WDM-PON移动回程网络中的下游波长调度，提出了不同的启发式算法和优化算法，其中光联网单元（ONU）与基站（BS）集成在一起。这项工作的主要目的是为固定流量和无线流量改善从基础结构到最终用户的数据包传递的时间延迟。这是通过在基于环的聚合WDM-PON接入架构中通过考虑波长的发送优先级以及相邻ONU / BS之间移动用户的协作区域的动态波长调度和共享技术来实现的。此外，还开发了用于波长选择的整数线性程序（ILP），以与两种拟议算法进行比较时用作基准。