Wavelength division multiplexing\time division multiplexing passive optical network (WDM/TDM-PON) is the attractive candidate for PON bandwidth sharing among multiple service providers, featuring massive bandwidth and longer reach. This infrastructure reduces the overall cost of the Fiber-to-the-premises (FTTP) services and offers relatively lower tariffs for the end customers. The dynamic bandwidth and wavelength allocation (DBWA) process in such PON networks ensure the fair sharing of the available bandwidth resources among the virtual network operators ($\mathit{vNOs}$). The earlier reported DBWA schemes with multiple $\mathit{vNOs}$ have not efficiently utilized the unused and residual upstream bandwidth. This study presents a novel load adaptive merging algorithm (LAMA) for converting various individual virtual bandwidth maps($\mathit{vBWmaps}$) into a single physical bandwidth map ($\mathit{phyBWMap})$. The LAMA scheme modifies the existing strict priority scheme called the Priority-Based Merging Algorithm (PBMA) scheme and improves the performance of the merging engine by allocating the $\mathit{phyBWMap}$ in a load adaptive manner to the $\mathit{vNOs}$ in the multi-tenant PON architecture. The proposed algorithm is compared with PBMA in terms of throughput efficiency, upstream delay, and capacity utilization under self-similar and Poison traffic scenarios. The results show that the proposed scheme offers higher bandwidth utilization resulting in increased throughput with lower upstream delays in the multi-tenant PON environment.

波分复用/时分复用无源光网络（WDM/TDM-PON）是多个服务提供商之间共享PON带宽的有吸引力的候选方案，具有带宽大、覆盖范围更广的特点。这种基础设施降低了光纤到户 (FTTP) 服务的总体成本，并为最终客户提供相对较低的资费。此类 PON 网络中的动态带宽和波长分配（DBWA）过程确保了虚拟网络运营商之间可用带宽资源的公平共享（$\mathit{vNO}$）。较早报道的具有多个 DBWA 方案$\mathit{vNO}$没有有效利用未使用和剩余的上行带宽。本研究提出了一种新颖的负载自适应合并算法（LAMA），用于转换各种单独的虚拟带宽图（$\mathit{vBWmaps}$) 到单个物理带宽映射 ($\mathit{物理BWMap})$. LAMA 方案修改了现有的严格优先级方案，称为基于优先级的合并算法 (PBMA) 方案，并通过分配$\mathit{物理BWMap}$以负载自适应的方式$\mathit{vNO}$在多租户 PON 架构中。在自相似和 Poison 流量场景下，该算法在吞吐效率、上行延迟和容量利用率方面与 PBMA 进行了比较。结果表明，所提出的方案提供了更高的带宽利用率，从而在多租户 PON 环境中以更低的上行延迟提高了吞吐量。