The vision of mankind is always beyond the future. The communication technology has developed very rapidly since last few decades. The mobile phone has became the window to the world of information. While 3G is revolutionary thing that man has achieved. The attempts are being made to develop 4G that is the fourth generation communication technology. Very soon within a year the 4G will be ready for deployment. I explained you briefly about 1G, 2G & 3G. This post is targeted towards all the technical predications about 4G.
Although 3G was revolution and just like extension to existing 2G services, 4G is a evolution. 4G is entirely new thing distinct from 2G and 3G telephony. 4G is chiefly aimed to enable users to have uninturruptible and and amazingly high-speed internet access which is give rise to several new features, for example real-time HD video conferencing, streaming, live TV, online gaming, telepresence etc. The whole mobile network architecture is redesigned to achieve high-speed connectivity.
The air interface used in 4G, as explained before is LTE (Long Term Evolution). Just like 2G uses TDMA, 3G uses WCDMA, 4G uses a new technology known as OFDMA (Orthogonal Frequency Division Multiple Access). The core network of 3G is WCDMA. Similarly the core network in 4G is referred as SAE (System Architectural Evolution). This core network is flat all IP network. The major advantage of SAE is that it is designed in such a way to accommodate all networks such as GSM, CDMA, Wi-fi (IEEE 802.11) , Wimax (IEEE 802.16) . That is the device supported with Wi-fi, Wimax etc. can be also supported by SAE. 4G uses MIMO (multiple-input and multiple-output) technique to achieve this much data rate. MIMO is the use of multiple antennas at both transmitter and receiver to improve communication performance and efficiency.
The 4G is totally devoted to data communication and there is no support for traditional voice calls. You cannot dial a phone number directly. Thus, all voice calls are VoIP calls. Your voice after dialing any number gets routed towards the IP network and not PSTN network. By the way, there is also support for IP video calls with much higher quality and less image and voice distortion as compared to 3G video call.
Considering speeds, there is peak download speed upto 1 Gbps and upload speed upto 0.5 Gbps in 4G SAE if the operator has reserved spectrum of 20 MHz.
That's all! Verizon in USA and Vodafone in Germany have successfully launched 4G services. Probably in India the, 4G will arrive after 2015 considering the interest of operators and people. I think my small attempt to make you look into the future will be indeedly successful!
Although 3G was revolution and just like extension to existing 2G services, 4G is a evolution. 4G is entirely new thing distinct from 2G and 3G telephony. 4G is chiefly aimed to enable users to have uninturruptible and and amazingly high-speed internet access which is give rise to several new features, for example real-time HD video conferencing, streaming, live TV, online gaming, telepresence etc. The whole mobile network architecture is redesigned to achieve high-speed connectivity.
The air interface used in 4G, as explained before is LTE (Long Term Evolution). Just like 2G uses TDMA, 3G uses WCDMA, 4G uses a new technology known as OFDMA (Orthogonal Frequency Division Multiple Access). The core network of 3G is WCDMA. Similarly the core network in 4G is referred as SAE (System Architectural Evolution). This core network is flat all IP network. The major advantage of SAE is that it is designed in such a way to accommodate all networks such as GSM, CDMA, Wi-fi (IEEE 802.11) , Wimax (IEEE 802.16) . That is the device supported with Wi-fi, Wimax etc. can be also supported by SAE. 4G uses MIMO (multiple-input and multiple-output) technique to achieve this much data rate. MIMO is the use of multiple antennas at both transmitter and receiver to improve communication performance and efficiency.
The 4G is totally devoted to data communication and there is no support for traditional voice calls. You cannot dial a phone number directly. Thus, all voice calls are VoIP calls. Your voice after dialing any number gets routed towards the IP network and not PSTN network. By the way, there is also support for IP video calls with much higher quality and less image and voice distortion as compared to 3G video call.
Considering speeds, there is peak download speed upto 1 Gbps and upload speed upto 0.5 Gbps in 4G SAE if the operator has reserved spectrum of 20 MHz.
That's all! Verizon in USA and Vodafone in Germany have successfully launched 4G services. Probably in India the, 4G will arrive after 2015 considering the interest of operators and people. I think my small attempt to make you look into the future will be indeedly successful!
Thanks and regards,
Nitish R. Muley
Nitish R. Muley
