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When you have a cell phone that you are using in your country and you want to go to Another Country you have to apply at your cell phone company to roam your account to be able to use it in the other country
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Mention the parts available in basic cellular system?
The architecture of most cellular systems can be broken down into the following six components: a) Mobile Station (MS): A mobile station is basically a mobile or wireless device that contains a control unit, a transceiver and an antenna system for data and voice transmission. For example, in GSM networks, the mobile station will consist of the mobile equipment (ME) and the SIM card. b) Air Interface Standard: There are three main air interface protocols or standards: frequency division multiple access (FDMA), time division multiple access (TDMA) and code division multiple access (CDMA). These standards are basically the medium access control (MAC) protocols that define the rules for entities to access the communication medium. These air interface standards allow many mobile user to share simultaneously the finite amount of radio channels. c) Base Station (BS): A base station is a fixed station in a mobile cellular system used for radio communications with mobile units. They consist of radio channels and transmitter and receiver antenna mounted on a tower. d) Gateway: The gateway is the communication links between two wireless systems or between wireless and wired systems. There are two logical components inside the Gateway: mobile switching center (MSC) and interworking function (IWF). The MSC connects the cellular base stations and the mobile stations to the public switched telephone network (PSTN) or other MSC. It contains the EIR database. The IWF connects the cellular base stations and the mobile stations to Internet and perform protocol translation if needed. e) Databases: Another integral component of a cellular system is the databases. There are two main databases: the Home Location Register (HLR) and Visitor Location Register (VLR). The HLR contains the information of each subscriber who resides in the same city as the mobile switching center (MSC). The VLR temporarily stores the information for each visiting subscriber in the coverage area of a MSC. The VLR is the database that supports roaming capability. f) Security Mechanism: The security mechanism is to confirm that a particular subscriber is allowed to access the network and also to authenticate the billing. There are two databases used for security mechanism: Equipment Identify Register (EIR) and Authentication Center (AuC). The EIR identifies stolen or fraudulently altered phones that transmit identity data that does not match with information contained in either the HLR or VLR. The AuC, on the other hand, manages the actual encryption and verification of each subscriber.
What is the scope of digital communication?
Digital communications has a lot of scope in our life . For example, all the cellular networks,internet and other advanced communication systems are based on digital technology. So, there are a lot of companies growing in this sector.Today, fast and cheap communication has become the demand of public and thus there is a huge competition between companies to sustain in the market.
Meaning of electronics and communication?
It is a field of engineering in which we learn about the electronic component.This is the one of the branch in which we can implement our ideas and theory in developing of new electronic circuits or improving existing circuits. generally these circuits has use in communication for example mobile communication,optical fibre etc.
What is M-ary communication?
what is M-ary communication?
What are the disadvantages of analog communication?
Disadvantage of Analog Communication: 1)Analog Communication systems are costlier than digital communication system. 2)Less Security in Analog Communication 3)More prone to noise interference.
What is the full form of GSM?
Global System for Mobile communicationsThe acronym "GSM" comes originally from the French language:Groupe Spécial Mobile
What does cell mean-?
Cell in regards to cell phones is a shortened term for the word "cellular." A cellular network is a communication system for mobile phones that operates on certain frequencies.
What has the author Jarkko Vesa written?
Jarkko Vesa has written: 'A Comparison of the Finnish and the Japanese mobile services markets' -- subject(s): Cross-cultural studies, Mobile communication systems, Cellular telephone equipment industry, Cellular telephone systems
who was the theory on the effective use of cellular phones credited to?
The theory on the effective use of cellular phones is often credited to sociologist and communication theorist Barry Wellman. He explored how mobile technology reshapes social interactions and community dynamics, emphasizing the role of cellular phones in facilitating connections and maintaining relationships. His work highlights the impact of mobile communication on social networks and the way people engage with one another.
What is the principle role of a tower within a cellular system?
to track data useage
Is 3 Mobile the name of a cellular phone company?
3 Mobile is not the name of a cellular phone company. There is a cellular phone company by the name of T Mobile. T Mobile has a variety of phone and data plans.
Where was the first cellular network launched?
The first cellular network was launched in Japan by Nippon Telegraph and Telephone (NTT) in 1979. This network, known as the NTT Mobile Telecommunications Network, utilized analog technology and marked the beginning of mobile communication as we know it today. It laid the groundwork for the development of subsequent cellular networks around the world.
What is 3g mobile and where can you get it?
3g mobile is a cellular network. You can get it by going into any cellular store and requesting 3G.
What is the difference between Telecommunication and Mobile communication?
the difference between Telecommunication and Mobile communication that , tele related to wire communication and mobile related to wireless communication
What are the cellular network providers in Namibia?
There are two (2) cellular network providers in Namibia:MTC (Mobile Telecommunications)TN Mobile (Telecom Namibia Mobile)
In a cellular network each cell is controlled by a tower. What are these towers called?
In a cellular network, the towers that control each cell are called Base Transceiver Stations (BTS). These stations facilitate communication between mobile devices and the network, handling the radio communication for the mobile users within the cell. They are essential components of the network infrastructure, enabling connectivity and maintaining call quality.
What are cellular waves?
Cellular waves refer to the electromagnetic waves used for cellular communication, such as radio waves or microwaves. These waves allow cell phones to communicate with cell towers, enabling mobile phone users to make calls, send texts, and access the internet.
