Umbrella cell approach in mobile communication

The cell with low traffic speed is called as micro-cells and large high-speed traffic called macro-cells.

A hexagonal cell method is one of the closest approximation of a circle device. It is being typically used for the system.

The smaller cell is grouped and assumed to be under a large cell. This method called as an umbrella cell concept.

It can be used to provide a large area to high-speed users while small area coverage to users that travel at low speeds.

Some advantages of using an umbrella cell concept in cellular technology 
  • Umbrella cell provides a large coverage area to high-speed users.
  • Minimize the number of handoff for high-speed users.
  • Speed estimation can be performed by slop of short term average calculation of receive power.
  • If a high-speed user in large umbrella cell is near the base station and if its velocity is decreasing then the BS stands for  can decide whether to hand the user into the co-located micro-cell without the intervention of the mobile switching center (MSC stands for).
  • Provide additional micro-cell channel for pedestrian user.
Umbrella cell concept