Professional Study of Microwave Backhaul Network Planning and Optimization at IHS Towers Nigeria

Microwave backhaul networks form the critical transmission layer connecting base stations to the core network, and their planning and optimization directly determines the capacity and reliability of mobile telecommunications services delivered to subscribers. This study professionally examines the microwave backhaul network planning and optimization practices employed at IHS Towers Nigeria, one of the country's largest independent telecommunications tower operators, focusing on link planning methodology, interference management, and capacity optimization. A professional case study design was adopted, combining structured interviews with twelve microwave transmission engineers and network planning specialists at IHS, review of backhaul network design documentation for three regional clusters in the North Central, South West, and South South zones, and analysis of operational link performance data. Findings reveal that frequency coordination between co-located microwave links at shared tower sites was inconsistent, with documented co-channel interference incidents at 18% of multi-tenant tower sites reviewed. Path diversity was implemented at only 23% of mission-critical backhaul links, leaving these links exposed to single-point outage risk during adverse weather events. Capacity planning models were found to be based on static traffic projections that did not account for the video traffic growth trend, leading to link saturation at 31% of sites during peak demand periods. Recommendations include deployment of automated frequency coordination software, mandatory path diversity for all high-revenue site backhaul links, and adoption of adaptive modulation techniques to maximize throughput under varying atmospheric conditions. Keywords: microwave backhaul, network planning, IHS Towers, capacity optimization, frequency coordination.