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In 2026, discussing 5G network deployment is no longer about macro‑cell large‑scale coverage; it has shifted to more complex, fine‑grained scenarios. For telecom operators and system integrators worldwide, the tension between capacity and coverage in high‑density urban districts, large venues, and transportation hubs remains a challenging engineering problem. Many practitioners search for “high‑capacity 5G solutions” or “dense‑scenario AAU deployment,” driven by anxiety over overloaded existing networks and a quest for the optimal balance between new device performance and cost.
Looking back at projects over the past few years, a common pitfall is blindly pursuing the highest theoretical peak data rates while neglecting the combined impact of the actual radio environment, power supply, transport, and operational complexity. Selecting equipment is not a simple parameter comparison; it is more like finding an optimal solution under a set of constraints.
The Gap Between Theoretical Peaks and Real‑World Capacity
On the spec sheet, an AAU supporting the 4.9 GHz band with a 64 T×64 R configuration can inspire exciting expectations. However, in real urban canyons or inside stadiums, these theoretical values often need substantial discounts. Multipath effects, heterogeneous user device performance, and sudden high‑traffic bursts all cause network performance to deviate from the ideal curve.
In an early deployment at a large smart park, the team was overly optimistic in estimating the coverage and capacity of a single high‑end AAU. During a major exhibition, the base station near the main exhibition area showed full‑strength signal, yet user data rates plummeted. Post‑event analysis revealed that the issue was not the AAU’s processing capability but the front‑haul link and core‑network resource scheduling failing to keep up with the sudden air‑interface demand. This reminds us that the radio access network is only one link in the chain, and bottlenecks may