Advantages of Cellular Network: Call Establishment Process Quiz & Flashcards

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Questions and Answers

What is the main purpose of cellular networks?

To support a large number of channels over a short range

To minimize the number of transmitters in each cell

To provide connectivity for mobile phones over a wide area (correct)

To replace low power transmitters with high power ones

What is the typical support for channels in a cellular network over 80km?

50 channels

25 channels (correct)

10 channels

100 channels

In cellular network organization, why are adjacent cells allocated different frequencies?

To simplify antenna selection and switching (correct)

To reduce the power consumption of base stations

To increase the range of each cell

To allow for simultaneous communication in adjacent cells

What is the shape of cells in a cellular network that provides equidistant antennas?

Square Signup and view all the answers

How is the radius of cells defined in a cellular network with hexagonal cells?

As the radius of the circumscribed circle Signup and view all the answers

What is the primary advantage of using multiple low power transmitters in a cellular network?

Reduced interference between cells Signup and view all the answers

What is the main advantage of 2G over 1G cellular systems?

More efficient use of spectrum Signup and view all the answers

Which of the following is a feature of 3G cellular systems?

Integration of high-speed data services Signup and view all the answers

Why are small cells preferred over large cells in the cellular concept?

Small cells offer more capacity and coverage Signup and view all the answers

What defines the shape of a hexagonal cell in cellular systems?

The distance between adjacent antennas being equidistant Signup and view all the answers

In a cellular system, what does a Base Station (BS) do?

Connect calls between mobile units and fixed network Signup and view all the answers

What are the characteristics of control channels in cellular systems?

Set up and maintain calls Signup and view all the answers

What is the primary advantage of cellular systems over traditional wireless systems?

Higher capacity due to frequency reuse Signup and view all the answers

In the basic call setup process for a cellular system, what is the first step taken by the Mobile Switching Center (MSC)?

Dispatching the request to all Base Stations (BS) Signup and view all the answers

Which generation of cellular systems introduced digital modulation and supported both voice and low data rates?

2G (Second Generation) Signup and view all the answers

Which of the following is a disadvantage of cellular systems compared to traditional wireless systems?

The need for frequency planning Signup and view all the answers

In the context of cellular systems, what is the purpose of the Mobile Identification Number (MIN)?

To uniquely identify a mobile user within the cellular network Signup and view all the answers

Which of the following statements about microcells is true?

Microcells are used to improve capacity in high-traffic areas of cellular systems Signup and view all the answers

Study Notes

Cellular Network Overview

The main purpose of cellular networks is to provide wireless communication services to a large number of users over a wide geographic area.

Cellular Network Organization

Adjacent cells in a cellular network are allocated different frequencies to minimize interference and improve overall network performance.
The radius of cells in a cellular network with hexagonal cells is defined by the distance from the center of the cell to the corner of the hexagon.

Cell Shape and Characteristics

The shape of cells in a cellular network that provides equidistant antennas is hexagonal.
The shape of a hexagonal cell in cellular systems is defined by the distance between the cell center and the corner of the hexagon.

Base Station and Control Channels

A Base Station (BS) in a cellular system serves as a transceiver and controller for the cell.
Control channels in cellular systems have characteristics such as low data rates, high reliability, and duplex operation.

Advantages of Cellular Systems

The primary advantage of using multiple low power transmitters in a cellular network is improved frequency reuse and increased capacity.
The primary advantage of cellular systems over traditional wireless systems is the ability to support a large number of users and provide extended coverage.

Cellular System Generations

2G cellular systems have the main advantage of digital modulation over 1G systems, which supported only analog modulation.
3G cellular systems feature high-speed data rates, video conferencing, and multimedia support.
The first step taken by the Mobile Switching Center (MSC) in the basic call setup process for a cellular system is to receive the call request from the mobile device.

Cellular System Characteristics

Small cells are preferred over large cells in the cellular concept because they provide better frequency reuse and increased capacity.
The primary disadvantage of cellular systems compared to traditional wireless systems is the need for a complex infrastructure of base stations and controllers.

Mobile Identification and Microcells

The purpose of the Mobile Identification Number (MIN) in the context of cellular systems is to uniquely identify a mobile device.
Microcells are characterized by a smaller size and lower transmit power compared to traditional cells, and are often used in urban areas to provide better coverage and capacity.

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Description

Learn about the process of establishing a call in a cellular network, from MSC dispatching the request to allocating a channel and changing frequencies. Explore advantages like higher capacity and robustness, as well as disadvantages such as infrastructure needs.

Cellular Network Call Establishment Process

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