What is WiMAX?
What is WiMAX?
One of the things that have always been considered in the age of information and communication is the speed of access to information. Users in different types of networks are always looking to achieve higher speeds in data transmission.
The number of users of this type of network is increasing. Easy and comprehensive access enables users to connect to their desired network regardless of network cable, network equipment, etc. This wireless communication technology has a wide range of methods. Provides transmission and provides one-point to multi-point communications to mobile communications and mobile Internet access.
Introduction
Wimax (Wimax) technology, which stands for Worldwide Interoperability for Microwave Access, was introduced in 2001 to transmit data wirelessly, and its technology is very similar to wi-fi. Compatible with IEEE 802.16 / ETSI HiperMAN, it is suitable for equipment that can work with other systems, unlike wi-fi, which transmits data over the 802.11 protocol, which has a coverage of up to a radius of several kilometers…
WiMAX is an extremely useful and revolutionary wireless method of accessing the Internet for all users (at any level).
The solution is to access the Internet through microwaves. The designers and engineers of this method aim to facilitate unlimited internet access for all users to the extent of mobile phone access shortly, and as now, in most countries of the world, owning and using a mobile phone has become a common phenomenon have easy and unlimited access to the Internet for everyone.
WiMAX Architecture
WiMAX is a digital wireless communication system and is a good alternative to ADSL networks and even short-range wireless networks in urban areas. One of the biggest strengths of this technology compared to other wireless technologies is its high wavelength and the ability to access it over very long distances.
The IEEE has defined two ways of accessing the WiMAX network:
1. Fixed IEEE802.16 TM2004 = Access is provided by an antenna such as a satellite TV station.
2. Mobile IEEE 802.16eTM = shared station (user) is very similar to IEEE 802.11 Wi-Fi technology stations.
The architecture of the WiMAX network depends on two things: the wi-fi connection and the network topology. With the flourishing of WiMAX shortly, these two networks can be combined, and the benefits of both can be enjoyed. Wi-fi cells can work continuously with existing wi-fi cells and select the best route to transfer to the user.
How does WiMAX work?
WiMAX works according to the same WIFI rule. WiMAX transmits data by radio waves between computers. A computer equipped with WiMAX equipment receives data from a WIMAX transmitter. Data may be sent for high security and prevent others from accessing the password. Has been.
The fastest WIFI connection is 54Mbps. While WiMAX can provide 70Mbps bandwidth, this bandwidth is shared between different service users so that the speed for the end-user is almost the same as ADSL speed.
WiMAX needs two main components to create a practical network.
- Central Station (BS) acts as a repeater and can be connected to the Internet.
- Subscriber/end-user using high bandwidth wireless access through the central station.
WiMAX offers two types of wireless services. - Offline Visual Service (NLOS): The protocol stacks are IEEE 802.16 MAC compliant. This type of wi-fi service is when a small antenna on a shared computer (user) is connected to the tower. In this service, WiMAX uses a lower frequency similar to wi-fi. This frequency is between 2 GHz and 11 GHz. Due to the use of short wavelengths, NLOS service can cross obstacles.
- Line of sight (LOS) service: In this type of service, a plate antenna is installed on the roof or pole points of a WiMAX tower. This type of communication is more powerful and stable and can send large amounts of information with less error. This type of connection uses a higher frequency, up to 66 GHz. At high frequencies, there is less interference, and more bandwidth is available.
The WiMAX station can send information to computers and routers using powerful LOS antennas, although routers and computers that support WiMAX technology are transmitters within 30 miles. Thirty miles is the maximum range of WiMAX.
The benefits of WiMAX
In connection with the use of WiMAX, wave interference is reduced. WiMAX can run on both authorized and unauthorized frequencies, providing a controlled environment and creating a growing economic model for wireless portable waves.
One of the features of WiMAX is that it also supports audio and video well, and the service provided is completely unlimited in addition to data. The user can download and upload during the day and night, regardless of volume and time.
WiMAX equipment, including modems, transmitters, and radio receivers, is smaller than other wireless technologies. Its portability allows it to enter laptops, PCs, and cell phones. Modem user remote can be managed by technical experts, and modem software updates are done remotely by the company.
The most important feature of WiMAX is the ability of different manufacturers to work together.
WiMAX uses different modulation methods among consumers and uses base stations at different distances.
Other features include the need for no direct view between the modem on the user side and the central antenna and the extremely large radius it covers during high data rates. Advanced network topologies (mesh) and antenna techniques (beam – formin, STC, and antenna diversity can be used to cover a wider range, and these advanced techniques also increase spectral efficiency, capacity, reuse, maximum output power, and the average for each channel (Rf) of radiofrequency.
WiMAX applications
One of the most prominent features of this technology is that it is mobile, which creates a lot of applications for those who work with laptops and makes them not have to be located in a specific place or in a very limited area to have high-speed and secure communication. They can also travel at high speeds and use the Internet. The possibility of Internet telephony (VoIP) is also included in WiMAX, which can be a competitor to the current mobile system.
Vixen is also used for advertising. For example, in places such as the subway and airports, many people travel, and much information is sent to their phones at once. Which can be in the form of images, sound or animation. Be. These aspects represent a new wave of this unique technology in today’s world.
Security
WiMAX has one of the best security classes, with impenetrable encryption and authentication methods and special control and protection methods. This makes data encrypted and accessible only with a username and password, and users, especially mobile users, can connect to the network anywhere with such permission.
Conclusion
The use of high-speed wireless technologies is one of the newest and, at the same time, the most widely used networks in many industrial societies, electronic and banking services, educational services, medical services, etc. The application of this type of technology is increasing day by day. Ease of installation and maintenance costs due to the lack of use of wires lead network administrators to install this type of network. Many managers in all parts of the world tend to use this type of technology at a very wide level.
