Wireless communication is not a novelty, but rather an advanced technology that is one of the most advanced technologies, whose roots go back to a long time, specifically in 1880, when “Hertz” presented his vision and mathematical evidence of the presence of electromagnetic waves capable of carrying or transmitting energy or electrical signal from one place to another without the need for a physical wire, this discovery opened the way for a communications revolution that has taken place during the past two centuries and of course it is continuing until now, this primitive technology has been used in wireless telegraphy or what is known as telegraphy, through its exploitation in the creation of radio waves, and ending with what they are Today It has multiple uses in the field of data transmission and internet connection with different computers, phones, and devices.
Based on the above, a wireless or “wireless connection” can be defined as a method of transmitting information or energy between two or more points that are not connected to physical wires. The most prominent example of this method is radio waves, which can be directed to reach near points, such as the one used in Bluetooth technology. , Or very distant points such as those used to communicate with deep points in outer space.
Currently, many things around us depend on the wireless, because the mouse that you hold to start working on the computer may be of that type of wireless, as well as many things that depend on the same technology, most notably cell phones, traditional TV broadcasts, and radio and two-way radios.
Currently, the term Wireless refers more to what refers to communications devices that share the Internet without wires, and perhaps this shorthand for its role expresses the importance of what this technology does in the scope of Internet sharing with ease in homes and public places without the need for complications of wires and what is causing confusion at the level of places that they are distributed.
Computer stages with data transmission
In terms of using wires, the computer went through three stages with data transmission, the first of which was using wires. The networks and the connections between the devices were through direct connections with wires in what is known as Wired Computer Networks, such as LANs, MANs, and WANs.
In the second stage, wireless was used to make networks in what is known as the Wireless Local Area Network or an abbreviation of WLAN, which is the method currently applied to a large amount in the work of the Internet and many devices, and it is a method whereby the Internet or data is distributed wirelessly to two or more devices for High-frequency radio wave path This method usually involves an internet access point. Users of this method can move from one place to another freely within the permissible coverage of the network, and the coverage is often limited to the home or small office.
The third stage also relies on wireless, but it targets many more coverage areas than those targeted by WLAN that may in some cases reach entire cities, in what is known as Worldwide Interoperability for Microwave Access or acronym in WiMAX
Types of wireless communications
Wireless communications can be divided into two types:
Directed communications: The most prominent example is the mobile phone network, which is characterized by a high ability to transmit data without interference or mixing of transport channels, as well as the frequency of frequent use in different places, as well as one of its advantages is that the percentage of energy wasted or used in it is very little if It was compared to others, due to the fact that they are directed at specific points.
Unguided communications: the most prominent example of this type is radio broadcasting and television broadcasting, and this broadcasting is mostly formed through broadcast antennas that originate from a single place in a non-directed way, covering vast geographical areas such as cities and perhaps countries, but the drawbacks of this type are the overlapping of different channels and sometimes interference Also, the low level of privacy.
The future of internet broadcasting
With everything around us, there may not be a need to use these aforementioned technologies to connect to the Internet,
The internet will be broadcast in satellite space with satellites directed to every spot on the Earth, an ambitious project known as Starlink that has already been implemented by Canadian businessman Elon Musk.
And this giant project aims to spread small satellites into the Earth’s orbit with a number of up to 12,000 satellites.
The first set of these satellites was launched in mid-2019 and can be detected in the sky from time to time in the form of a luminous other trains.