Bandwidth Provisioning Architecture In Backhaul

Abstract

The Metro Ethernet Forum has defined a set of Ethernet Virtual Connection services that are adopted to provide scalable Ethernet transport for mobile backhaul. However, these services usually address single cell site backhaul per UNI ha ndoff, not considering statistical multiplexing gain at a hub site which aggregates backhaul traffics of multiple cell sites backhaul pipe. This paper proposed an efficient carrier Ethernet bandwidth provisioning architecture for mobile backhaul with cellular cluster . A statisti cal estimation scheme has been developed for deriving a safe overbooking factor at a given U ser - N network - Interface . Then a n efficient QinQ transport architecture w as proposed to support bandwidth sharing in cellular cluster with overbooked backhaul bandwidth in carrier Ethernet. Experimental data analysis have showed that our new schemes can benefit mobile operators in resource utilization efficiency, carrier Ethernet cost saving and backhaul performance.