Passive optical network (PON) technology offers an attractive cost-efficient alternative to support 5G and Beyond 5G mobile network fronthauling (MFH). However, MFH for such networks is challenging given its high bandwidth and strict latency requirements. To reduce these requirements, radio access network (RAN) functional splitting has been introduced in 5G networks; this provides more flexibility in resource allocation since the protocol stack is distributed between the centralized and the distributed units. In contrast to the conventional MFH requirement of the RF-PHY splitting, the MFH traffic produced by higher-layer splittings becomes more dependent on the actual user traffic load. By capitalizing on the new characteristics of the MFH traffic with RAN functional splitting, this article introduces a resource allocation mechanism to improve the performance of PONs serving MFH.
翻译:被动光学网络(PON)技术为支持5G和5G以上移动网络前厅提供了具有吸引力的具有成本效益的替代方案,然而,鉴于这种网络的高带宽度和严格的长期性要求,MFH具有挑战性;为减少这些要求,5G网络引入了无线电接入网络(RAN)功能分机;这在资源分配方面提供了更大的灵活性,因为协议堆叠是在中央和分布的单位之间分配的;与RF-PHY分机的传统MH要求相反,较高层次分机产生的MFH流量更多地依赖于实际的用户流量;通过利用MFH通信的新特点和RAN分机功能分机,本条引入了一种资源分配机制,以改善为MFH服务的PON的性能。