Heuristic-Based Cost-Efficient C-RAN Fronthaul Deployment Over TWDM-PON

Abstract

In recent times, fiber-based time and wavelength division multiplexed passive optical networks (TWDM-PONs) are identified as the most cost-efficient transport network technology for Centralized Radio Access Network (C-RAN) fronthaul design. In this paper, we propose a heuristic-based two-phase optimized recursive clustering and cardinality re-organization algorithm (RCCRA) for cost-efficient C-RAN fronthaul design using TWDM-PON. In the first optimization phase, the proposed RCCRA scheme addresses the location-allocation problem of different ONUslRRHs located at dispersed locations by forming clusters. In the second optimization phase, the algorithm reorganizes the cardinality of each formed clusters. RCCRA explores the optimal number and size of each ONU/RRH cluster, the most suitable location for placing passive devices, and the best fiber route from the BBU pool to the given ONUsIRRHs. We primarily focus on decreasing the total deployment cost by reducing the total length of deployed fibers and the number of reuuired nassive devices in the remote nodes.