- What keeps the shape of a cell?
- Why frequency reuse is required?
- What is meant by frequency?
- What are the main reasons for using cellular system?
- What keeps a cell healthy?
- What is the brain of the cell?
- Why the shape of cell is not circle Mcq?
- What is a cell in cellular system?
- What is cellular technology?
- Why do cells have different shapes?
- What is the condition of handoff?
- What is handoff process?
- What geometric shape is used in cellular system design and why?
- What is the basic concept of frequency re use?
- What is channel reuse?
What keeps the shape of a cell?
Cells in our body come in various shapes and sizes.
Each cell is shaped in such a way as to optimise it for a specific function.
That each cell type has its unique shape is due to its cytoskeleton, an internal scaffold built of protein filaments..
Why frequency reuse is required?
Frequency reuse allows for a dramatic increase in the number of customers that can be served (capacity) within a geographic area on a limited amount of radio spectrum (limited number of radio channels).
What is meant by frequency?
Frequency is the rate at which current changes direction per second. It is measured in hertz (Hz), an international unit of measure where 1 hertz is equal to 1 cycle per second. Hertz (Hz) = One hertz is equal to one cycle per second.
What are the main reasons for using cellular system?
(a) What are the main reasons for using cellular systems? Answer: (4 points) Higher capacity, higher number of the users: cellular systems can reuse spectrum according to certain patterns. Each cell can support a maximum number of users.
What keeps a cell healthy?
Antioxidants — such as vitamins C and E and carotenoids, which include beta-carotene, lycopene and lutein — help protect healthy cells from damage caused by free radicals.
What is the brain of the cell?
nucleusThe nucleus is called the “brain” of the cell because it holds the information needed to conduct most of the cell’s functions.
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.
What is a cell in cellular system?
A cell is the geographic area that is covered by a single base station in a cellular network. A network for wireless communications is comprised of a large number of base stations to efficiently use radio spectrum to cover the service area. Geographically separated frequencies may be reused many times.
What is cellular technology?
Cellular technology is what mobile phone networks are based on, and it’s the technology that gave mobile phones the name “cell phones”. Cellular technology basically refers to having many small interconnected transmitters as opposed to one big one.
Why do cells have different shapes?
Cells have different shapes because they do different things. … The shapes of cells have evolved to help them carry out their specific function in the body, so looking at a cell’s shape can give clues about what it does. Neurons are cells in the brain and nervous system.
What is the condition of handoff?
Explanation: Handoff occurs when a mobile moves into a different cell while a conversation is in progress. The MSC automatically transfers the call to a new channel belonging to the new base station. 2. Handoff does not require voice and control channel to be allocated to channels associated with the new base station.
What is handoff process?
In cellular communications, the handoff is the process of transferring an active call or data session from one cell in a cellular network or from one channel to another. … Handoff is necessary for preventing loss of interruption of service to a caller or a data session user. Handoff is also called handover.
What geometric shape is used in cellular system design and why?
In conclusion, in order to serve all these purpose, Hexagon is the ideal geometric shape used in cellular system design. Antenna will be placed on the center of the cell, as shown in the picture the distance d are all equal. This implies that the adjacent antennas are equidistant.
What is the basic concept of frequency re use?
Frequency reusing is the concept of using the same radio frequencies within a given area, that are separated by considerable distance, with minimal interference, to establish communication. For example, when N cells are using the same number of frequencies and K be the total number of frequencies used in systems.
What is channel reuse?
Channel reuse enables dynamic control over the receive (Rx) sensitivity in order to improve spatial reuse of the channel. The channel reuse feature applies to non-DFS channels only.