Designing and comparing seamless MPLS using BGP-LU and LDP DOD for LTE backhaul

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  • Introduction: The mobile backhaul (MBH) comprises of technologies that interconnect service providers cell site Base Stations (BTS, eNodeB) to Mobile controllers (BSC/RNC) and the core network (SGSN//MME/MGW, etc.). In the case of LTE, the MBH ties the cell site base station (eNodeB) directly to the core network (SGW and MME). Some implementations of mobile backhaul use different technologies such TDM, SDH/SONET, ATM, Frame Relay among others to transport individual service profiles like voice and data. For example, Voice may be transported over circuit switched (connection oriented) TDM network whiles data is carried primarily over packet switched network such as Frame Relay. The MBH must continue to support 2G, 3G and 4G-LTE services as well as newer and next-generation service such as 5G. Each service profile adds scaling complexity, management overhead thereby increasing the capital and operational expenditures to the transport network when separate transports technologies are implemented for separate services. Increasing demands for bandwidth for mobile broadband services and cloud services in addition to rising capital and operational expenditures, mobile network operators have come to realize the need to transform their MBH to IP/MPLS which offers a unified and robust transport network, high bandwidth at lower cost and flexible provisioning while providing the same service reliability and quality of service that is provided by the SONET/SDH.

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    Attribution-NonCommercial 4.0 International