What defines a cellular network cell?

What defines a cellular network cell?

• A. A town or area is divided into zones of 1 to 2 km
• B. A town or area is divided into approximately 20 to 30 km cells which have a tower that provides signal
• C. Cells are connected only by fiber optic links
• D. Each cell uses the same frequency across the entire network

Answer: (B)

In a cellular network, a cell is the geographic area covered by one base station’s radio signal. The tower at that station provides the wireless coverage for everything within that area, and the size of the cell isn’t fixed—it depends on factors like technology, terrain, and how much capacity is needed. In many networks, the larger, wide-area cells used to cover rural or suburban locations (macro cells) span a sizable distance, often described as roughly 20 to 30 kilometers in practice. This setup allows the same network to reuse frequencies in nearby cells without interference, boosting overall capacity. That’s why the option describing cells as roughly 20–30 kilometers across, with a tower providing the signal, best captures what a cell represents. The other statements don’t define a cell: a 1–2 km area describes much smaller microcells or picocells, not the typical macro cell definition; backhaul connectivity isn’t what determines a cell’s size; and using the same frequency everywhere would cause interference, since frequencies are reused in a controlled pattern to manage that risk.

In a cellular network, a cell is the geographic area covered by one base station’s radio signal. The tower at that station provides the wireless coverage for everything within that area, and the size of the cell isn’t fixed—it depends on factors like technology, terrain, and how much capacity is needed. In many networks, the larger, wide-area cells used to cover rural or suburban locations (macro cells) span a sizable distance, often described as roughly 20 to 30 kilometers in practice. This setup allows the same network to reuse frequencies in nearby cells without interference, boosting overall capacity.

That’s why the option describing cells as roughly 20–30 kilometers across, with a tower providing the signal, best captures what a cell represents. The other statements don’t define a cell: a 1–2 km area describes much smaller microcells or picocells, not the typical macro cell definition; backhaul connectivity isn’t what determines a cell’s size; and using the same frequency everywhere would cause interference, since frequencies are reused in a controlled pattern to manage that risk.