Table of Contents
Why do we use hexagonal cell shape?
A hexagon is a tessellating cell shape in that cells can be laid next to each other with no overlap; therefore, they can cover the entire geographical region without any gaps. This approximation is frequently employed in planning and analysis of cellular networks.
Why hexagon shape is chosen for radio coverage for a cell?
Earlier, circular cells were used for radio coverage but it failed to connect all the towers and there is a gap between the circles. But, hexagon shapes has the same distance anywhere and everywhere so the radio coverage is better here.
What is the ideal shape of the cell in the cellular system?
Explanation: The shape of the cell present in the cellular network is hexagonal since it can cover the entire geographical area without any gap and overlapping.
What is a hexagonal cell?
hexagonal system, one of the principal categories of structures to which a given crystalline solid can be assigned. The hexagonal unit cell is distinguished by the presence of a single line, called an axis of 6-fold symmetry, about which the cell can be rotated by either 60° or 120° without changing its appearance.
Why is the hexagon the strongest shape?
The hexagon is the strongest shape known. In a hexagonal grid each line is as short as it can possibly be if a large area is to be filled with the fewest number of hexagons. This means that honeycombs require less wax to construct and gain lots of strength under compression.
What is umbrella cell approach in wireless communication?
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.
Which antenna is used by Centre excited hexagonal cells?
Centre excited hexagonal cells use Omni directional antennas.
Why the size of the cell is kept small in cellular network?
Explanation: The size of the cells in cellular network is kept small because of the need of high capacity in areas with high user density and reduced size and cost of base station electronics.
Why the shape of cell is not circle Mcq?
Why the shape of cell is not circle? Explanation: Circle is the first natural choice to represent the coverage area of a base station. But while adopting this shape, adjacent cells cannot be overlaid upon a map without leaving gaps or creating overlapping regions. 8.
What is the shape for the cellular region for maximum radio coverage?
Answer is “Hexagon”
What is hexagonal primitive unit cell?
A hexagonal primitive unit cell contains 6 atoms in the crystal structure i.e. n = 6. We know that, for hcp, The number of octahedral voids will be equal to the number of atoms in the crystal structure.
Why is a hexagonal cell shape perfect for a cell network?
Hexagonal cell shape is perfect over square or triangular cell shapes in cellular architecture because it cover an entire area without overlapping i.e. they can cover the entire geographical region without any gaps. Each cell has its own base station with transmitter power and antenna height.
Why is the shape of a hexagon used in a map?
It is because it requires fewer cells to represent a hexagon than triangle or square. The frequency reuse become possible using this shape. The geographical area is divided into small hexagonal regions called cells.
What is the function of hexagonal shape in transmission lines?
The hexagonal shape is cell in above photo.hexagonal shape covers all the maximum area for transmission signal. The circle contains max area practically but it is overlapping in other cells. The blue part is called over lapping which means intereference of one BS to another BS.
What is the best shape for cell coverage area?
The simplest option is to have a hexagonal cell shape so that the cells do not overlap each other and there are no zones without coverage. Hexagonal cells fit perfectly. In reality the a cell’s coverage area is neither hexagonal nor circular.