Mobile Communication Systems

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Questions and Answers

What components are found in the mobile station?

Control unit, power supply, and base station
Transceiver, antenna, and control circuitry (correct)
Processor, antenna, and satellite link
Transmitter, receiver, and network interface

What is the primary function of the base station in a cellular network?

To convert analog signals to digital signals
To manage the mobile switching center directly
To connect mobile users via telephone lines or microwave links (correct)
To amplify signals for long-distance communication

Which of the following accurately describes the role of the Mobile Switching Center (MSC)?

It provides a direct link between mobile users and satellites.
It only processes voice calls and does not handle data.
It connects the entire cellular system to the PSTN. (correct)
It replaces the function of base stations in cellular communications.

Which method is used for communication between the base station and the mobile station?

Common air interface (D) Signup and view all the answers

What characteristic of base stations allows them to handle full duplex communications?

Multiple transmitters and receivers working simultaneously (D) Signup and view all the answers

What is the role of towers in cellular base stations?

They support several transmitting and receiving antennas. (B) Signup and view all the answers

Which channel types are specified for the communication between the mobile station and the base station?

Different channels defined by a common air interface (B) Signup and view all the answers

What does full duplex communication in a cellular network enable?

Simultaneous transmission and reception of signals (D) Signup and view all the answers

What is the primary function of the Mobile Telephone Switching Office (MTSO) in a cellular network?

To route calls and manage handoffs between cells (C) Signup and view all the answers

Which network architecture is specifically considered in Voice over LTE technology?

Evolved Packet Core (EPC) (A) Signup and view all the answers

Which of the following is NOT a part of the multimedia subsystems mentioned?

Evolved Packet Core (A) Signup and view all the answers

What is the primary technology used in 4G networks for data transmission?

Long Term Evolution (LTE) (A) Signup and view all the answers

Which access network architecture is associated with high-speed broadband wireless access?

Wimax Access Network (A) Signup and view all the answers

What is the main purpose of SIP servers in multimedia subsystems?

To handle user registration and call setup (C) Signup and view all the answers

Which of the following best describes a cellular radio system?

It provides standard telephone service using two-way radio. (D) Signup and view all the answers

Which architecture allows the integration of voice and data services in a cellular network?

4G Long Term Evolution (LTE) (D) Signup and view all the answers

What components are essential in a basic cellular system as illustrated?

Base stations and mobile switching center (MSC) (B) Signup and view all the answers

Which function is primarily associated with the Mobile Switching Center (MSC)?

Directly handling call routing between mobile stations (B) Signup and view all the answers

How do mobile stations interact with base stations during a call?

Using radio communication (D) Signup and view all the answers

What happens during a handoff in cellular communication?

The mobile station is switched to a different base station (B) Signup and view all the answers

In the context of Voice Over LTE technology, what is the primary benefit?

Improved call quality over traditional networks (C) Signup and view all the answers

What role do multimedia subsystems play in a cellular network?

Facilitating multimedia services like video calls and messages (B) Signup and view all the answers

Which of the following best describes the architecture of a cellular network?

A hierarchical structure with base stations and control centers (D) Signup and view all the answers

What technology is primarily used to enable mobile stations to communicate within a cellular system?

Radio frequency communication (A) Signup and view all the answers

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Study Notes

Cellular Communication Overview

Mobile stations include a transceiver, antenna, and control circuitry.
Base stations feature multiple transmitters and receivers for full duplex communications.
Base stations connect mobile users in a cell to the Mobile Switching Center (MSC) via telephone lines or microwave links.
MSC coordinates base station activities and integrates the cellular system with the Public Switched Telephone Network (PSTN).
Communication between mobile users and base stations is facilitated by a common air interface, which allows for a process known as handoff.

Network Architectures

Access Network Architectures encompass several systems:
- GSM Base Station Subsystem (BSS)
- 3G Radio Network System (RNS)
- 4G Long Term Evolution (LTE)
- Wimax Access Network
Core Network Architectures focus on:
- Evolved Packet Core (EPC)
Multimedia Subsystems related to voice communication include:
- IP Voice
- Voice over LTE (VoLTE)
- SIP Servers

Cellular Technology Functionality

Cellular radio systems enable standard telephone services using two-way radio at remote locations.
A basic cellular system is created from mobile stations, base stations, and the MSC.
Mobile stations communicate via radio signals with base stations and can be transferred between multiple base stations during a call, enhancing coverage and service quality.

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