Question

How does Mobile Data work???

Answer 1

Answer:

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Explanation:

Cell phones have an in-built antenna which is used to send packets of digital information back and forth with cell-phone towers via radio waves. Mobile phones connect to a cell tower in the area, and instead of connecting to another phone it connects to the Internet and can fetch or retrieve data.

Answer 2

Answer:-In today’s age of connectivity, smartphones and tablets are becoming more of a necessity rather than a luxury. Whether it is not to miss important mails, being updated with the news or finding directions when lost – connecting to the Internet anytime and anywhere is becoming an integral part of our lives. It’s now possible to get internet access in any location as long as your phone gets a good signal from the cellular network. You can also use public Wi-Fi hotspots to connect to the Internet through a shared connection. So how exactly does the Internet, which was made for computers, work on your mobile phone?

First, let’s see what Mobile Internet is. In simple terms, Mobile Internet is a smaller Internet scaled down to fit the dimensions of a web browser on a mobile phone. The mobile phone network is an example of a cellular network. A cellular network has a cluster of geographic locations together known as a ‘cell’ which connect to the Internet through satellites. Each cell has a transmitting tower at its centre through which information is passed to and fro via digital radio waves.

Connecting to the Internet

There are usually two ways to connect to the internet through your mobile phone – Via a cellular telephone service provider or by using standard Wi-Fi. A Wi-Fi enabled device lets you surf the Web at free Wi-Fi hotspots, which is helpful when the phone network connection isn’t that strong. Through a cellular service provider, the phone connects to the Internet through data transfer the same way a PC does, but with a wireless link. We can access the same Web applications just like in our PCs if we use a Wireless Application Protocol (WAP)-enabled cell phone. WAP is the universal standard for wireless communications and applications.

For operating mobile phone networks, Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA) are the most commonly deployed. GSM and CDMA use different algorithms which allow multiple mobile phone users to share the same digital radio frequency without causing interfering for each other. Cell phones have an in-built antenna which is used to send packets of digital information back and forth with cell-phone towers via radio waves. Mobile phones connect to a cell tower in the area, and instead of connecting to another phone it connects to the Internet and can fetch or retrieve data.

Connecting Mobile to Internet

The voice and data channels of cell phones are separated for maximum efficiency – Mobile Voice goes in one channel and IP or SMS signalling over Mobile Internet in another. The General Packet Radio Service (GPRS) network provides a gateway to the internet through different frequency channels for uploading and downloading.

Now, let’s see what goes behind thfe transfer of data between a wireless device and the Internet. The main component is Radio frequency (RF) energy which can be transmitted throughout a building passing through walls and other objects. This RF energy is transmitted to carry the information between your phone and the Internet. A Modem gets the information onto and off the RF carrier by modulation and demodulation. The information through the RF carrier is sent in packets which have a source and destination address, very similar to the postal delivery service.

A router directs each packet to its destination and also provides a wireless access point to the Internet. A Wireless Access Point enables sharing an Internet connection by letting several computers wirelessly share Internet access through a single connection. The Internet Service Provider administers an Internet access point, for example a cellular radio tower, which may need to be accessible over long distances.

Wireless Application Protocol (WAP) for Mobile Networks

Different computer networks are linked through a common Internet protocol that lets them all speak the same language. To accomplish the same for mobile networks, we use WAP. The need for WAP comes from low data transfer rates of mobile phones, inferior resolution of a mobile phone display as well as interoperability issues.

The mobile internet mainly utilises lightweight pages written in Extensible Hypertext Markup Language (XHTML) or Wireless Markup Language (WML) to deliver content to mobile devices. A markup language is used to add predefined tags or information to content which informs the device receiving the content what to do with it. WAP also allows the use of standard Internet protocols for smooth functioning of