How Mobile Phone Call Works? What Happened when you make call.?? Explained with 3D Animation

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Transcript

00:00How can two people talk to each other all the time when they are thousands of miles apart?

00:05First of all, when you make a call, the signal transmitter in the mobile phone will emit the

00:10signal in the form of electromagnetic waves. Is it directly emitted to your friend's mobile phone?

00:17Of course not, because there are many limitations in the transmission of electromagnetic waves.

00:22First of all, they are easily affected by weather and electricity. In addition,

00:28electromagnetic waves cannot propagate over long distances. When making long-distance calls,

00:34the area of the Earth will also have a great impact on electromagnetic waves.

00:39In order to solve these problems, cellular communication technology emerged. Operators

00:45divide the geographical sentence into multiple hexagonal clauses. Each hexagonal clause has a

00:51base station, and each base station is connected with an optical fiber cable. The optical fiber

00:57is laid. Underground or under the sea, global interconnection is achieved. Therefore,

01:04the electromagnetic waves emitted by mobile phones are first received by the base station.

01:10The base station converts the electromagnetic waves into high-frequency light pulses.

01:16The light pulses will flow to the base station transceiver box at the bottom of the signal tower.

01:21After processing, the signal will be sent to the city where the operator is located.

01:27Mobile Switching Center Mobile Switching Center is referred to as

01:31MSC. Basically, every city has one MSC. When you apply for a new card, all the information will be

01:39stored in the new card. The home of this card belongs to the MSC in the city where the operator

01:45is located. If you are from New York and go to California, the MSC in California will continue

01:51to provide you services, which will cause roaming. At the same time, the MSCs in California

01:58and New York will communicate. The MSC in California will update your location information

02:04to New York, so no matter where the user goes, the card will be opened. Instantly find which

02:10base station in which city he is in. So when MSC receives the signal from your base station,

02:17MSC can immediately find the base station near the other party, and the base station will

02:22immediately send a call request to the other party. After the other party answers when you speak into

02:28the microphone, the phone's microphone will immediately collect your voice, and then the

02:33sensor will convert the collected voice into a binary digital signal of 0 and 1. Then these

02:40digital signals will be emitted in the form of electromagnetic waves through the signal transmitter

02:45in the mobile phone and then transmitted through the base station. The other party can receive all

02:51your requests through the signal receiver and then transcode them, so that the other party

02:57can hear your voice thousands of miles away. Like, Comment, Share, and Subscribe

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