Skip to main content

Cellular Networks.. a complete story from 1G to 5G?

Cellular Networks Introduction
A cellular network is a communication network broadcasted usually by transeivers i.e. base stations. It distributes network over land areas called cells. These base station containing major transeiver provides the cell with network coverage for transmission of voice, data and other types of content. A cell uses different set of frequencies from neighboring cells, to avoid interference and provide guaranteed service quality. The frequencies used are often leased to Network Company by Telecommunication department.
By networking all the relative base stations, it provides radio coverage over a wide geographic area. The network enables different devices like mobile phones, laptops, tablets, modems, pagers, etc to communicate with each other via base station.

Development Phases of Cellular Networks

=> 1G Networks 


Probably very few are familiar with this term 1G Network as it was analog network developed a long while ago in 1979 in Japan by Nippon Telegraph and Telephone(NTT). During first phase, it was network system limited within Tokyo, then NTT gradually expanded its 1G Network all over Japan.





=> 2G Networks
With the development of MOSFETs, the first commercial digital cellular network, the 2G generation, was launched in 1991. The Global System for Mobile Communication  (GSM) Standard originally described a digital, circuit-switched network optimized for full duplex voice telephony.

After 2G Network, the base principle is same but there has been a huge leap on data transfer rate which changed the scenario of Mobile Communications.

=> 3G Network
With the huge leap in data transfer over mobiles, 3G was launched with theoretical data transfer rate of 42Mbps but usally is limited between 384kbps for R99 Handsets and upto 7.2Mbps for HSDPA handsets. With the introduction of fast data rate, video calls & internet were embedded into mobile technology. It can be considered as revolution in Cellular Networks and a game changer for globe.
=>  4G / LTE Network
Long-Term Evolution (LTE) increased the bandwidth and speed of wireless data networks using Digital System Processing (DSP) techinques and modulation developed on late 90's. The LTE specification provides downlink eak rate of 300Mbps, uplink peak rate of 75Mbps and QoS provisions provisions permitting a transfer latency of less than 5ms in the radio acces netork. It has ability to manage fast-moving mobiles and supports multi-cast and broadcast streams.
=> 5G
It is the fifth generation of wireless communication technology supporting cellular data networks. 5G can support up to a million devices per square kilometer, while 4G supports only up to 100,000 devices per square kilometer. Speed is the main concern in this generation of network and will range from 50Mbps to over 2Gbps at the start, and is expected to grow to even 100Gbps i.e. 100x faster than 4g.

Comments

Post a Comment

Popular posts from this blog

Stadia? How it's better than your gaming console?

Stadia is a Cloud Gaming Service hosted by Google capable of streaming video games up to 4K reolution at 60fps with support for high-dynamic-range via company's numerous data centers across the globe. They need a very high-speed Internet Connection or probably 5G Network. It can be accessed through the Google Chrome Browser on desktops, Pixel Smartphones, supported smartphones from Samsung, Razer and Asus, Chrome OS Tablets and Chromecast. Being hosted in cloud, it does not require computer hardware, but only fast Internet connection and support for Google Chrome. It supports consecutive YouTube Streaming & cooperatively playing the same game with friends, to have picture-in-picture inserts on their display of their friend's point of view in game. It allow for large number of concurrent players on a game server. Stadia offers two tiers of service, a free Base level and a monthly subscription Pro level. The Pro tier costs approximately US $10 per month, allowing users ...
Post a Comment
Read more

New Trends on Smart Phone Markets in 2020

New Trends on Smart Phone Markets in 2020  High Refresh Rates Looking through the reports, 2020 has been the year of high refresh rate displays and high end Cameras. Normally we have been using 60fps refresh rate on our devices. Eventually 90hz display became trending which now leads to 120Hz display too. As processor’s capacity is increasing tremendously and only way to show its potential is by high refresh rate displays as it imitates being quick which gives a feeling of being fast and smoother than ever. Realme X50 Pro Phones featuring High refresh rate of 90Hz : Realme 6 & Realme 6 Pro Mi 10 Realme X50 Pro Realme X2 Pro OnePlus 7T series Nubia Red Magic 3s OnePlus 7 Pro Reno 3 Pro Cameras Not many years ago, one front camera and one rear camera was all we needed but the trend is changing in such a way that even normal products feature at most 2 front cameras for depth detection and atleast 3 cameras on back and even goes upto 7 rear came...
Post a Comment
Read more

Levitating Speakers

Levitating speaker floats in mid-air due to their magnetic fields. It is dedicated to people who are bored of monotonous Bluetooth speaker such that these speaker produce nice sound quality while the speaker floats in mid air.                                                                 Levitating Speakers are generally similar to each other . And, we can see so many varieties . The speaker in the image is ReVolt Levio one of great design with 360 degrees surround sound. The battery lasts almost 8 hours. It looks magical in your desk, speaker floating in mid air.
Post a Comment
Read more