Next Generation Ethernet Passive Optical Network (NG-EPON) is considered to be future prospective access technology that could help to achieve 100Gbps data rates. Wavelength bonding is a phenomenon that can help Optical Network Units (ONU) to enhance their transmission capabilities. Using wavelength bonding, an ONU could transmit on multiple wavelength channels in parallel. The ONUs can achieve data transmission rates ranging from 25Gbps to 100Gbps. In upstream direction, ONUs share different available channels in time-sharing manner to effectively utilize the resources in NG-EPON. Dynamic Wavelength & Bandwidth Allocation (DWBA) algorithm is required for efficient allocation of wavelength and bandwidth resources in upstream direction. DWBA plays a vital role to help ONUs for transmission on multiple channels simultaneously. When an ONU transmits on multiple channels, a frame-rearrangement problem would occur at the Optical Line Terminal (OLT). OLT suffers from an extra overhead of frame-rearrangement; as the received frames at OLT are not in proper sequence. DWBA can play a vital role in avoiding frame rearrangement overhead. We proposed a DWBA algorithm to avoid/minimize frame rearrangement problem and efficient bandwidth allocation in NG-EPON. Our proposed DWBA avoids and minimizes frame-rearrangement problem and provides efficient resource allocation. We comparatively analyzed and evaluated our proposed DWBA with the existing DWBA algorithm. The simulation results show that our proposed DWBA minimizes frame-rearrangement problem as compared to existing DWBA algorithms and proves to be more efficient based on average (end-to-end) delay and completion time.

下一代以太网无源光网络 (NG-EPON) 被认为是有助于实现 100Gbps 数据速率的未来前瞻性接入技术。波长绑定是一种可以帮助光网络单元（ONU）增强其传输能力的现象。使用波长绑定，ONU 可以在多个波长通道上并行传输。ONU可以实现25Gbps到100Gbps的数据传输速率。在上行方向，ONU以分时方式共享不同的可用信道，以有效利用NG-EPON中的资源。动态波长和带宽分配 (DWBA) 算法需要在上行方向上有效分配波长和带宽资源。DWBA在帮助ONU同时在多个信道上传输方面起着至关重要的作用。ONU在多通道传输时，会在OLT（Optical Line Terminal）发生帧重排问题。OLT 遭受帧重排的额外开销；因为 OLT 接收到的帧顺序不正确。DWBA 可以在避免帧重排开销方面发挥重要作用。我们提出了一种 DWBA 算法来避免/最小化 NG-EPON 中的帧重排问题和有效的带宽分配。我们提出的 DWBA 避免并最小化了帧重排问题，并提供了有效的资源分配。我们将我们提出的 DWBA 与现有的 DWBA 算法进行了比较分析和评估。仿真结果表明，与现有的 DWBA 算法相比，我们提出的 DWBA 最小化了帧重排问题，并且基于平均（端到端）延迟和完成时间证明更有效。